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new 3d310b89ac4d convertTo (#20817)
3d310b89ac4d is described below
commit 3d310b89ac4d8b9030f56267c0ca28c01d064514
Author: Claus Ibsen <[email protected]>
AuthorDate: Wed Jan 14 12:37:54 2026 +0100
convertTo (#20817)
* CAMEL-22853: camel-core - Add convertTo function to simple language
---
.../org/apache/camel/catalog/languages/simple.json | 47 ++++++------
.../language/csimple/joor/OriginalSimpleTest.java | 45 +++++++++++
.../org/apache/camel/language/simple/simple.json | 47 ++++++------
.../modules/languages/pages/simple-language.adoc | 3 +
.../camel/language/simple/SimpleConstants.java | 3 +
.../language/simple/SimpleExpressionBuilder.java | 79 +++++++++++++++++++
.../simple/ast/SimpleFunctionExpression.java | 89 ++++++++++++++++++++++
.../apache/camel/language/simple/SimpleTest.java | 53 +++++++++++++
8 files changed, 320 insertions(+), 46 deletions(-)
diff --git
a/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/languages/simple.json
b/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/languages/simple.json
index c9c573a035eb..f7dbf5cd4835 100644
---
a/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/languages/simple.json
+++
b/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/languages/simple.json
@@ -71,28 +71,29 @@
"substring(head,tail)": { "index": 45, "kind": "function", "displayName":
"Substring", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Returns a substring of
the message body\/expression. If only one positive number, then the returned
string is clipped from the beginning. If only one negative number, then the
returned string is clipped fr [...]
"random(min,max)": { "index": 46, "kind": "function", "displayName":
"Generate Random Number", "group": "function", "label": "function", "required":
false, "javaType": "int", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Returns a random number between min (included) and max (excluded).", "ognl":
false, "suffix": "}" },
"skip(num)": { "index": 47, "kind": "function", "displayName": "Skip First
Items from the Message Body", "group": "function", "label": "function",
"required": false, "javaType": "java.util.Iterator", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The skip function iterates the message body and skips
the first number of items. This can be used with the Splitter EIP to split a
message body and skip the first N number of [...]
- "trim(exp)": { "index": 48, "kind": "function", "displayName": "Trim",
"group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The trim function trims
the message body (or expression) by removing all leading and trailing white
spaces.", "ognl": false, "suffix": "}" },
- "length(exp)": { "index": 49, "kind": "function", "displayName": "Length",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The payload length (number of bytes) of the
message body (or expression).", "ognl": false, "suffix": "}" },
- "size(exp)": { "index": 50, "kind": "function", "displayName": "Size",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The size of the message body (or expression).
If the payload is java.util.Collection or java.util.Map based then the size is
the number of elements; otherwise the payload size in bytes.", "ognl": false,
"suffix": "}" },
- "uppercase(exp)": { "index": 51, "kind": "function", "displayName":
"Uppercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Uppercases the message
body (or expression)", "ognl": false, "suffix": "}" },
- "lowercase(exp)": { "index": 52, "kind": "function", "displayName":
"Lowercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Lowercases the message
body (or expression)", "ognl": false, "suffix": "}" },
- "concat(exp,exp,separator)": { "index": 53, "kind": "function",
"displayName": "Concat", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Performs a string concat using two expressions (message body as default) with
optional separator", "ognl": false, "suffix": "}" },
- "collate(num)": { "index": 54, "kind": "function", "displayName": "Group
Message Body into Sub Lists", "group": "function", "label": "function",
"required": false, "javaType": "java.util.Iterator", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The collate function iterates the message body and
groups the data into sub lists of specified size. This can be used with the
Splitter EIP to split a message body and group\/ba [...]
- "join(separator,prefix,exp)": { "index": 55, "kind": "function",
"displayName": "Join", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
join function iterates the message body\/expression and joins the data into a
string. The separator is by default a comma. The prefix is optional. The join
uses the message body as source by default. [...]
- "messageHistory(boolean)": { "index": 56, "kind": "function",
"displayName": "Print Message History", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The message history of the current exchange (how it has
been routed). This is similar to the route stack-trace message history the
error handler logs in case of an unhandled exception. The b [...]
- "uuid(type)": { "index": 57, "kind": "function", "displayName": "Generate
UUID", "group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "Returns a UUID using the
Camel `UuidGenerator`. You can choose between `default`, `classic`, `short` and
`simple` as the type. If no type is given, the default is used. It is also
possible to use a custom `UuidG [...]
- "hash(exp,algorithm)": { "index": 58, "kind": "function", "displayName":
"Compute Hash Value", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Returns a hashed value (string in hex decimal) of the message body\/expression
using JDK MessageDigest. The algorithm can be SHA-256 (default) or SHA3-256.",
"ognl": false, "suffix": "}" },
- "empty(type)": { "index": 59, "kind": "function", "displayName": "Create
Empty Object", "group": "function", "label": "function", "required": false,
"javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Creates a new empty
object (decided by type). Use `string` to create an empty String. Use `list` to
create an empty `java.util.ArrayList`. Use `map` to create an empty
`java.util.LinkedHashMap`.", "ognl": [...]
- "iif(predicate,trueExp,falseExp)": { "index": 60, "kind": "function",
"displayName": "If Then Else", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Evaluates the predicate and returns the value of trueExp or falseExp. This
function is similar to the ternary operator in Java.", "ognl": false, "suffix":
"}" },
- "list(val...)": { "index": 61, "kind": "function", "displayName": "Create
List of values", "group": "function", "label": "function", "required": false,
"javaType": "java.util.ArrayList", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
list function creates an ArrayList with the given set of values.", "ognl":
false, "suffix": "}" },
- "map(key1,value1,...)": { "index": 62, "kind": "function", "displayName":
"Create Map of pairs", "group": "function", "label": "function", "required":
false, "javaType": "java.util.LinkedHashMap", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The map function creates a LinkedHashMap with the given set of
pairs.", "ognl": false, "suffix": "}" },
- "attachments": { "index": 63, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "java.util.Map", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "All
the attachments as a Map<String,DataHandler.", "ognl": false, "suffix": "}" },
- "attachments.size": { "index": 64, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The number of attachments.
Is 0 if there are no attachments.", "ognl": false, "suffix": "}" },
- "attachmentContentAsText": { "index": 65, "kind": "function",
"displayName": "Attachment Content As Text", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment as text (ie String).",
"ognl": false, "suffix": "}" },
- "attachmentContent": { "index": 66, "kind": "function", "displayName":
"Attachment Content", "group": "function", "label": "function", "required":
false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
content of the attachment", "ognl": false, "suffix": "}" },
- "attachmentContentAs(type)": { "index": 67, "kind": "function",
"displayName": "Attachment Content As", "group": "function", "label":
"function", "required": false, "javaType": "Object", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment, converted to the given
type.", "ognl": false, "suffix": "}" },
- "attachmentHeader(key,name)": { "index": 68, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name.", "ognl": false, "suffix": "}" },
- "attachmentHeader(key,name,type)": { "index": 69, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name, converted to the given type.", "ognl":
false, "suffix": "}" },
- "attachment(key)": { "index": 70, "kind": "function", "displayName":
"Attachment", "group": "function", "label": "function", "required": false,
"javaType": "jakarta.activation.DataHandler", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The DataHandler for the given attachment.", "ognl": true,
"suffix": "}" }
+ "convertTo(exp,type)": { "index": 48, "kind": "function", "displayName":
"Convert To", "group": "function", "label": "function", "required": false,
"javaType": "", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "Converts the message body
(or expression) to the specified type.", "ognl": true, "suffix": "}" },
+ "trim(exp)": { "index": 49, "kind": "function", "displayName": "Trim",
"group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The trim function trims
the message body (or expression) by removing all leading and trailing white
spaces.", "ognl": false, "suffix": "}" },
+ "length(exp)": { "index": 50, "kind": "function", "displayName": "Length",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The payload length (number of bytes) of the
message body (or expression).", "ognl": false, "suffix": "}" },
+ "size(exp)": { "index": 51, "kind": "function", "displayName": "Size",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The size of the message body (or expression).
If the payload is java.util.Collection or java.util.Map based then the size is
the number of elements; otherwise the payload size in bytes.", "ognl": false,
"suffix": "}" },
+ "uppercase(exp)": { "index": 52, "kind": "function", "displayName":
"Uppercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Uppercases the message
body (or expression)", "ognl": false, "suffix": "}" },
+ "lowercase(exp)": { "index": 53, "kind": "function", "displayName":
"Lowercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Lowercases the message
body (or expression)", "ognl": false, "suffix": "}" },
+ "concat(exp,exp,separator)": { "index": 54, "kind": "function",
"displayName": "Concat", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Performs a string concat using two expressions (message body as default) with
optional separator", "ognl": false, "suffix": "}" },
+ "collate(num)": { "index": 55, "kind": "function", "displayName": "Group
Message Body into Sub Lists", "group": "function", "label": "function",
"required": false, "javaType": "java.util.Iterator", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The collate function iterates the message body and
groups the data into sub lists of specified size. This can be used with the
Splitter EIP to split a message body and group\/ba [...]
+ "join(separator,prefix,exp)": { "index": 56, "kind": "function",
"displayName": "Join", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
join function iterates the message body\/expression and joins the data into a
string. The separator is by default a comma. The prefix is optional. The join
uses the message body as source by default. [...]
+ "messageHistory(boolean)": { "index": 57, "kind": "function",
"displayName": "Print Message History", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The message history of the current exchange (how it has
been routed). This is similar to the route stack-trace message history the
error handler logs in case of an unhandled exception. The b [...]
+ "uuid(type)": { "index": 58, "kind": "function", "displayName": "Generate
UUID", "group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "Returns a UUID using the
Camel `UuidGenerator`. You can choose between `default`, `classic`, `short` and
`simple` as the type. If no type is given, the default is used. It is also
possible to use a custom `UuidG [...]
+ "hash(exp,algorithm)": { "index": 59, "kind": "function", "displayName":
"Compute Hash Value", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Returns a hashed value (string in hex decimal) of the message body\/expression
using JDK MessageDigest. The algorithm can be SHA-256 (default) or SHA3-256.",
"ognl": false, "suffix": "}" },
+ "empty(type)": { "index": 60, "kind": "function", "displayName": "Create
Empty Object", "group": "function", "label": "function", "required": false,
"javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Creates a new empty
object (decided by type). Use `string` to create an empty String. Use `list` to
create an empty `java.util.ArrayList`. Use `map` to create an empty
`java.util.LinkedHashMap`.", "ognl": [...]
+ "iif(predicate,trueExp,falseExp)": { "index": 61, "kind": "function",
"displayName": "If Then Else", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Evaluates the predicate and returns the value of trueExp or falseExp. This
function is similar to the ternary operator in Java.", "ognl": false, "suffix":
"}" },
+ "list(val...)": { "index": 62, "kind": "function", "displayName": "Create
List of values", "group": "function", "label": "function", "required": false,
"javaType": "java.util.ArrayList", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
list function creates an ArrayList with the given set of values.", "ognl":
false, "suffix": "}" },
+ "map(key1,value1,...)": { "index": 63, "kind": "function", "displayName":
"Create Map of pairs", "group": "function", "label": "function", "required":
false, "javaType": "java.util.LinkedHashMap", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The map function creates a LinkedHashMap with the given set of
pairs.", "ognl": false, "suffix": "}" },
+ "attachments": { "index": 64, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "java.util.Map", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "All
the attachments as a Map<String,DataHandler.", "ognl": false, "suffix": "}" },
+ "attachments.size": { "index": 65, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The number of attachments.
Is 0 if there are no attachments.", "ognl": false, "suffix": "}" },
+ "attachmentContentAsText": { "index": 66, "kind": "function",
"displayName": "Attachment Content As Text", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment as text (ie String).",
"ognl": false, "suffix": "}" },
+ "attachmentContent": { "index": 67, "kind": "function", "displayName":
"Attachment Content", "group": "function", "label": "function", "required":
false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
content of the attachment", "ognl": false, "suffix": "}" },
+ "attachmentContentAs(type)": { "index": 68, "kind": "function",
"displayName": "Attachment Content As", "group": "function", "label":
"function", "required": false, "javaType": "Object", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment, converted to the given
type.", "ognl": false, "suffix": "}" },
+ "attachmentHeader(key,name)": { "index": 69, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name.", "ognl": false, "suffix": "}" },
+ "attachmentHeader(key,name,type)": { "index": 70, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name, converted to the given type.", "ognl":
false, "suffix": "}" },
+ "attachment(key)": { "index": 71, "kind": "function", "displayName":
"Attachment", "group": "function", "label": "function", "required": false,
"javaType": "jakarta.activation.DataHandler", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The DataHandler for the given attachment.", "ognl": true,
"suffix": "}" }
}
}
diff --git
a/components/camel-csimple-joor/src/test/java/org/apache/camel/language/csimple/joor/OriginalSimpleTest.java
b/components/camel-csimple-joor/src/test/java/org/apache/camel/language/csimple/joor/OriginalSimpleTest.java
index 26e1a296f589..118a62abacb5 100644
---
a/components/camel-csimple-joor/src/test/java/org/apache/camel/language/csimple/joor/OriginalSimpleTest.java
+++
b/components/camel-csimple-joor/src/test/java/org/apache/camel/language/csimple/joor/OriginalSimpleTest.java
@@ -42,6 +42,7 @@ import org.apache.camel.Predicate;
import org.apache.camel.component.bean.MethodNotFoundException;
import org.apache.camel.language.bean.RuntimeBeanExpressionException;
import org.apache.camel.language.csimple.CSimpleLanguage;
+import org.apache.camel.language.simple.SimpleTest;
import org.apache.camel.language.simple.types.SimpleIllegalSyntaxException;
import org.apache.camel.spi.ExchangeFormatter;
import org.apache.camel.spi.Language;
@@ -2241,6 +2242,50 @@ public class OriginalSimpleTest extends
LanguageTestSupport {
assertExpression("${uuid(mygen)}", "1234");
}
+ @Test
+ public void testConvertTo() {
+ exchange.getMessage().setBody("Hello World");
+
+ Expression expression =
context.resolveLanguage("csimple").createExpression("${convertTo(byte[])}");
+ Object s = expression.evaluate(exchange, Object.class);
+ assertIsInstanceOf(byte[].class, s);
+
+ // ognl
+ expression =
context.resolveLanguage("csimple").createExpression("${convertTo(String).repeat(2)}");
+ s = expression.evaluate(exchange, Object.class);
+ assertIsInstanceOf(String.class, s);
+ assertEquals("Hello WorldHello World", s);
+ expression =
context.resolveLanguage("csimple").createExpression("${convertTo(${body},String).substring(2)}");
+ s = expression.evaluate(exchange, Object.class);
+ assertIsInstanceOf(String.class, s);
+ assertEquals("llo World", s);
+
+ expression =
context.resolveLanguage("csimple").createExpression("${convertTo(${body},byte[])}");
+ s = expression.evaluate(exchange, Object.class);
+ assertIsInstanceOf(byte[].class, s);
+
+ exchange.getMessage().setBody("987");
+ expression =
context.resolveLanguage("csimple").createExpression("${convertTo(int)}");
+ s = expression.evaluate(exchange, Object.class);
+ assertIsInstanceOf(Integer.class, s);
+ assertEquals(987, s);
+
+ exchange.getMessage().setBody("true");
+ expression =
context.resolveLanguage("csimple").createExpression("${convertTo(boolean)}");
+ s = expression.evaluate(exchange, Object.class);
+ assertIsInstanceOf(Boolean.class, s);
+ assertEquals(Boolean.TRUE, s);
+ }
+
+ @Test
+ public void testConvertToOGNL() {
+ exchange.getIn().setBody(new SimpleTest.OrderLine(123, "Camel in
Action"));
+
+
assertExpression("${convertTo(${body},org.apache.camel.language.simple.SimpleTest$OrderLine).getId}",
123);
+
assertExpression("${convertTo(${body},org.apache.camel.language.simple.SimpleTest$OrderLine).getName}",
+ "Camel in Action");
+ }
+
@Test
public void testSize() {
exchange.getMessage().setBody(new int[] { 4, 7, 9 });
diff --git
a/core/camel-core-languages/src/generated/resources/META-INF/org/apache/camel/language/simple/simple.json
b/core/camel-core-languages/src/generated/resources/META-INF/org/apache/camel/language/simple/simple.json
index c9c573a035eb..f7dbf5cd4835 100644
---
a/core/camel-core-languages/src/generated/resources/META-INF/org/apache/camel/language/simple/simple.json
+++
b/core/camel-core-languages/src/generated/resources/META-INF/org/apache/camel/language/simple/simple.json
@@ -71,28 +71,29 @@
"substring(head,tail)": { "index": 45, "kind": "function", "displayName":
"Substring", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Returns a substring of
the message body\/expression. If only one positive number, then the returned
string is clipped from the beginning. If only one negative number, then the
returned string is clipped fr [...]
"random(min,max)": { "index": 46, "kind": "function", "displayName":
"Generate Random Number", "group": "function", "label": "function", "required":
false, "javaType": "int", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Returns a random number between min (included) and max (excluded).", "ognl":
false, "suffix": "}" },
"skip(num)": { "index": 47, "kind": "function", "displayName": "Skip First
Items from the Message Body", "group": "function", "label": "function",
"required": false, "javaType": "java.util.Iterator", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The skip function iterates the message body and skips
the first number of items. This can be used with the Splitter EIP to split a
message body and skip the first N number of [...]
- "trim(exp)": { "index": 48, "kind": "function", "displayName": "Trim",
"group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The trim function trims
the message body (or expression) by removing all leading and trailing white
spaces.", "ognl": false, "suffix": "}" },
- "length(exp)": { "index": 49, "kind": "function", "displayName": "Length",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The payload length (number of bytes) of the
message body (or expression).", "ognl": false, "suffix": "}" },
- "size(exp)": { "index": 50, "kind": "function", "displayName": "Size",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The size of the message body (or expression).
If the payload is java.util.Collection or java.util.Map based then the size is
the number of elements; otherwise the payload size in bytes.", "ognl": false,
"suffix": "}" },
- "uppercase(exp)": { "index": 51, "kind": "function", "displayName":
"Uppercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Uppercases the message
body (or expression)", "ognl": false, "suffix": "}" },
- "lowercase(exp)": { "index": 52, "kind": "function", "displayName":
"Lowercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Lowercases the message
body (or expression)", "ognl": false, "suffix": "}" },
- "concat(exp,exp,separator)": { "index": 53, "kind": "function",
"displayName": "Concat", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Performs a string concat using two expressions (message body as default) with
optional separator", "ognl": false, "suffix": "}" },
- "collate(num)": { "index": 54, "kind": "function", "displayName": "Group
Message Body into Sub Lists", "group": "function", "label": "function",
"required": false, "javaType": "java.util.Iterator", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The collate function iterates the message body and
groups the data into sub lists of specified size. This can be used with the
Splitter EIP to split a message body and group\/ba [...]
- "join(separator,prefix,exp)": { "index": 55, "kind": "function",
"displayName": "Join", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
join function iterates the message body\/expression and joins the data into a
string. The separator is by default a comma. The prefix is optional. The join
uses the message body as source by default. [...]
- "messageHistory(boolean)": { "index": 56, "kind": "function",
"displayName": "Print Message History", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The message history of the current exchange (how it has
been routed). This is similar to the route stack-trace message history the
error handler logs in case of an unhandled exception. The b [...]
- "uuid(type)": { "index": 57, "kind": "function", "displayName": "Generate
UUID", "group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "Returns a UUID using the
Camel `UuidGenerator`. You can choose between `default`, `classic`, `short` and
`simple` as the type. If no type is given, the default is used. It is also
possible to use a custom `UuidG [...]
- "hash(exp,algorithm)": { "index": 58, "kind": "function", "displayName":
"Compute Hash Value", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Returns a hashed value (string in hex decimal) of the message body\/expression
using JDK MessageDigest. The algorithm can be SHA-256 (default) or SHA3-256.",
"ognl": false, "suffix": "}" },
- "empty(type)": { "index": 59, "kind": "function", "displayName": "Create
Empty Object", "group": "function", "label": "function", "required": false,
"javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Creates a new empty
object (decided by type). Use `string` to create an empty String. Use `list` to
create an empty `java.util.ArrayList`. Use `map` to create an empty
`java.util.LinkedHashMap`.", "ognl": [...]
- "iif(predicate,trueExp,falseExp)": { "index": 60, "kind": "function",
"displayName": "If Then Else", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Evaluates the predicate and returns the value of trueExp or falseExp. This
function is similar to the ternary operator in Java.", "ognl": false, "suffix":
"}" },
- "list(val...)": { "index": 61, "kind": "function", "displayName": "Create
List of values", "group": "function", "label": "function", "required": false,
"javaType": "java.util.ArrayList", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
list function creates an ArrayList with the given set of values.", "ognl":
false, "suffix": "}" },
- "map(key1,value1,...)": { "index": 62, "kind": "function", "displayName":
"Create Map of pairs", "group": "function", "label": "function", "required":
false, "javaType": "java.util.LinkedHashMap", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The map function creates a LinkedHashMap with the given set of
pairs.", "ognl": false, "suffix": "}" },
- "attachments": { "index": 63, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "java.util.Map", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "All
the attachments as a Map<String,DataHandler.", "ognl": false, "suffix": "}" },
- "attachments.size": { "index": 64, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The number of attachments.
Is 0 if there are no attachments.", "ognl": false, "suffix": "}" },
- "attachmentContentAsText": { "index": 65, "kind": "function",
"displayName": "Attachment Content As Text", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment as text (ie String).",
"ognl": false, "suffix": "}" },
- "attachmentContent": { "index": 66, "kind": "function", "displayName":
"Attachment Content", "group": "function", "label": "function", "required":
false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
content of the attachment", "ognl": false, "suffix": "}" },
- "attachmentContentAs(type)": { "index": 67, "kind": "function",
"displayName": "Attachment Content As", "group": "function", "label":
"function", "required": false, "javaType": "Object", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment, converted to the given
type.", "ognl": false, "suffix": "}" },
- "attachmentHeader(key,name)": { "index": 68, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name.", "ognl": false, "suffix": "}" },
- "attachmentHeader(key,name,type)": { "index": 69, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name, converted to the given type.", "ognl":
false, "suffix": "}" },
- "attachment(key)": { "index": 70, "kind": "function", "displayName":
"Attachment", "group": "function", "label": "function", "required": false,
"javaType": "jakarta.activation.DataHandler", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The DataHandler for the given attachment.", "ognl": true,
"suffix": "}" }
+ "convertTo(exp,type)": { "index": 48, "kind": "function", "displayName":
"Convert To", "group": "function", "label": "function", "required": false,
"javaType": "", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "Converts the message body
(or expression) to the specified type.", "ognl": true, "suffix": "}" },
+ "trim(exp)": { "index": 49, "kind": "function", "displayName": "Trim",
"group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The trim function trims
the message body (or expression) by removing all leading and trailing white
spaces.", "ognl": false, "suffix": "}" },
+ "length(exp)": { "index": 50, "kind": "function", "displayName": "Length",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The payload length (number of bytes) of the
message body (or expression).", "ognl": false, "suffix": "}" },
+ "size(exp)": { "index": 51, "kind": "function", "displayName": "Size",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The size of the message body (or expression).
If the payload is java.util.Collection or java.util.Map based then the size is
the number of elements; otherwise the payload size in bytes.", "ognl": false,
"suffix": "}" },
+ "uppercase(exp)": { "index": 52, "kind": "function", "displayName":
"Uppercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Uppercases the message
body (or expression)", "ognl": false, "suffix": "}" },
+ "lowercase(exp)": { "index": 53, "kind": "function", "displayName":
"Lowercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Lowercases the message
body (or expression)", "ognl": false, "suffix": "}" },
+ "concat(exp,exp,separator)": { "index": 54, "kind": "function",
"displayName": "Concat", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Performs a string concat using two expressions (message body as default) with
optional separator", "ognl": false, "suffix": "}" },
+ "collate(num)": { "index": 55, "kind": "function", "displayName": "Group
Message Body into Sub Lists", "group": "function", "label": "function",
"required": false, "javaType": "java.util.Iterator", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The collate function iterates the message body and
groups the data into sub lists of specified size. This can be used with the
Splitter EIP to split a message body and group\/ba [...]
+ "join(separator,prefix,exp)": { "index": 56, "kind": "function",
"displayName": "Join", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
join function iterates the message body\/expression and joins the data into a
string. The separator is by default a comma. The prefix is optional. The join
uses the message body as source by default. [...]
+ "messageHistory(boolean)": { "index": 57, "kind": "function",
"displayName": "Print Message History", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The message history of the current exchange (how it has
been routed). This is similar to the route stack-trace message history the
error handler logs in case of an unhandled exception. The b [...]
+ "uuid(type)": { "index": 58, "kind": "function", "displayName": "Generate
UUID", "group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "Returns a UUID using the
Camel `UuidGenerator`. You can choose between `default`, `classic`, `short` and
`simple` as the type. If no type is given, the default is used. It is also
possible to use a custom `UuidG [...]
+ "hash(exp,algorithm)": { "index": 59, "kind": "function", "displayName":
"Compute Hash Value", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Returns a hashed value (string in hex decimal) of the message body\/expression
using JDK MessageDigest. The algorithm can be SHA-256 (default) or SHA3-256.",
"ognl": false, "suffix": "}" },
+ "empty(type)": { "index": 60, "kind": "function", "displayName": "Create
Empty Object", "group": "function", "label": "function", "required": false,
"javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Creates a new empty
object (decided by type). Use `string` to create an empty String. Use `list` to
create an empty `java.util.ArrayList`. Use `map` to create an empty
`java.util.LinkedHashMap`.", "ognl": [...]
+ "iif(predicate,trueExp,falseExp)": { "index": 61, "kind": "function",
"displayName": "If Then Else", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Evaluates the predicate and returns the value of trueExp or falseExp. This
function is similar to the ternary operator in Java.", "ognl": false, "suffix":
"}" },
+ "list(val...)": { "index": 62, "kind": "function", "displayName": "Create
List of values", "group": "function", "label": "function", "required": false,
"javaType": "java.util.ArrayList", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
list function creates an ArrayList with the given set of values.", "ognl":
false, "suffix": "}" },
+ "map(key1,value1,...)": { "index": 63, "kind": "function", "displayName":
"Create Map of pairs", "group": "function", "label": "function", "required":
false, "javaType": "java.util.LinkedHashMap", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The map function creates a LinkedHashMap with the given set of
pairs.", "ognl": false, "suffix": "}" },
+ "attachments": { "index": 64, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "java.util.Map", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "All
the attachments as a Map<String,DataHandler.", "ognl": false, "suffix": "}" },
+ "attachments.size": { "index": 65, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The number of attachments.
Is 0 if there are no attachments.", "ognl": false, "suffix": "}" },
+ "attachmentContentAsText": { "index": 66, "kind": "function",
"displayName": "Attachment Content As Text", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment as text (ie String).",
"ognl": false, "suffix": "}" },
+ "attachmentContent": { "index": 67, "kind": "function", "displayName":
"Attachment Content", "group": "function", "label": "function", "required":
false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
content of the attachment", "ognl": false, "suffix": "}" },
+ "attachmentContentAs(type)": { "index": 68, "kind": "function",
"displayName": "Attachment Content As", "group": "function", "label":
"function", "required": false, "javaType": "Object", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment, converted to the given
type.", "ognl": false, "suffix": "}" },
+ "attachmentHeader(key,name)": { "index": 69, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name.", "ognl": false, "suffix": "}" },
+ "attachmentHeader(key,name,type)": { "index": 70, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name, converted to the given type.", "ognl":
false, "suffix": "}" },
+ "attachment(key)": { "index": 71, "kind": "function", "displayName":
"Attachment", "group": "function", "label": "function", "required": false,
"javaType": "jakarta.activation.DataHandler", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The DataHandler for the given attachment.", "ognl": true,
"suffix": "}" }
}
}
diff --git
a/core/camel-core-languages/src/main/docs/modules/languages/pages/simple-language.adoc
b/core/camel-core-languages/src/main/docs/modules/languages/pages/simple-language.adoc
index 195c7003d914..e6ad1b8eb142 100644
---
a/core/camel-core-languages/src/main/docs/modules/languages/pages/simple-language.adoc
+++
b/core/camel-core-languages/src/main/docs/modules/languages/pages/simple-language.adoc
@@ -294,6 +294,9 @@ log sensitive data from the message itself.
|concat(exp,exp,separator) |String |Performs a string concat using two
expressions (message body as default) with optional separator
+|convertTo(exp,type) |Object |Converts the message body (or expression) to the
specified type.
+|convertTo(exp,type).*OGNL* |Object |Converts the message body (or expression)
to the specified type and then invoke methods using a Camel OGNL expression.
+
|length(exp) |int |The payload length (number of bytes) of the message body
(or expression).
|size(exp) |int |The size of the message body (or expression). If the payload
is java.util.Collection or java.util.Map based then the size is the number of
elements; otherwise the payload size in bytes.
diff --git
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleConstants.java
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleConstants.java
index e7b56d1721e0..7a3f35ac0c47 100644
---
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleConstants.java
+++
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleConstants.java
@@ -180,6 +180,9 @@ public final class SimpleConstants {
+ " This can be used with the Splitter EIP to
split a message body and skip the first N number of items.",
label = "function", javaType = "java.util.Iterator", displayName
= "Skip First Items from the Message Body")
public static final String SKIP = "skip(num)";
+ @Metadata(description = "Converts the message body (or expression) to the
specified type.",
+ label = "function,ognl", displayName = "Convert To")
+ public static final String CONVERT_TO = "convertTo(exp,type)";
@Metadata(description = "The trim function trims the message body (or
expression) by removing all leading and trailing white spaces.",
label = "function", javaType = "String", displayName = "Trim")
public static final String TRIM = "trim(exp)";
diff --git
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionBuilder.java
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionBuilder.java
index f6e57d0508fd..b57a79616241 100644
---
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionBuilder.java
+++
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionBuilder.java
@@ -262,6 +262,85 @@ public final class SimpleExpressionBuilder {
};
}
+ /**
+ * Converts the result of the expression to the given type
+ */
+ public static Expression convertToExpression(final String expression,
final String type) {
+ return new ExpressionAdapter() {
+ private Class<?> clazz;
+ private Expression exp;
+
+ @Override
+ public void init(CamelContext context) {
+ try {
+ clazz =
context.getClassResolver().resolveMandatoryClass(type);
+ } catch (ClassNotFoundException e) {
+ throw CamelExecutionException.wrapRuntimeException(e);
+ }
+ exp =
context.resolveLanguage("simple").createExpression(expression);
+ exp.init(context);
+ }
+
+ @Override
+ public Object evaluate(Exchange exchange) {
+ return exp.evaluate(exchange, clazz);
+ }
+
+ @Override
+ public String toString() {
+ if (expression != null) {
+ return "convertTo(" + expression + ", " + type + ")";
+ } else {
+ return "convertTo(" + type + ")";
+ }
+ }
+ };
+ }
+
+ /**
+ * Converts the result of the expression to the given type and invoking
methods on the converted object defined in a
+ * simple OGNL notation
+ */
+ public static Expression convertToOgnlExpression(final String expression,
final String type, final String ognl) {
+ return new ExpressionAdapter() {
+ private Class<?> clazz;
+ private Expression exp;
+ private Language bean;
+
+ @Override
+ public void init(CamelContext context) {
+ try {
+ clazz =
context.getClassResolver().resolveMandatoryClass(type);
+ } catch (ClassNotFoundException e) {
+ throw CamelExecutionException.wrapRuntimeException(e);
+ }
+ exp =
context.resolveLanguage("simple").createExpression(expression);
+ exp.init(context);
+ bean = context.resolveLanguage("bean");
+ }
+
+ @Override
+ public Object evaluate(Exchange exchange) {
+ Object body = exp.evaluate(exchange, clazz);
+ if (body == null) {
+ return null;
+ }
+ Expression ognlExp = bean.createExpression(null, new Object[]
{ null, body, ognl });
+ ognlExp.init(exchange.getContext());
+ return ognlExp.evaluate(exchange, Object.class);
+ }
+
+ @Override
+ public String toString() {
+ if (expression != null) {
+ return "convertToOgnl(" + expression + ", " + type + ")."
+ ognl;
+ } else {
+ return "convertToOgnl(" + type + ")." + ognl;
+ }
+ }
+ };
+ }
+
/**
* Uppercases the given expressions (uses message body if expression is
null)
*/
diff --git
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java
index 6e9de342be52..aeb19e589610 100644
---
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java
+++
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java
@@ -890,6 +890,43 @@ public class SimpleFunctionExpression extends
LiteralExpression {
return SimpleExpressionBuilder.concatExpression(exp1, exp2,
separator);
}
+ // convertTo function
+ remainder = ifStartsWithReturnRemainder("convertTo(", function);
+ if (remainder != null) {
+ String exp = "${body}";
+ String type;
+ String values = StringHelper.before(remainder, ")");
+ if (values == null || ObjectHelper.isEmpty(values)) {
+ throw new SimpleParserException(
+ "Valid syntax: ${convertTo(type)} or
${convertTo(exp,type)} was: " + function,
+ token.getIndex());
+ }
+ if (values.contains(",")) {
+ String[] tokens = StringQuoteHelper.splitSafeQuote(values,
',', true, true);
+ if (tokens.length > 2) {
+ throw new SimpleParserException(
+ "Valid syntax: ${convertTo(type)} or
${convertTo(exp,type)} was: " + function,
+ token.getIndex());
+ }
+ exp = StringHelper.removeQuotes(tokens[0]);
+ type = StringHelper.removeQuotes(tokens[1]);
+ } else {
+ type = StringHelper.removeQuotes(values.trim());
+ }
+ remainder = StringHelper.after(remainder, ")");
+ if (ObjectHelper.isNotEmpty(remainder)) {
+ boolean invalid =
OgnlHelper.isInvalidValidOgnlExpression(remainder);
+ if (invalid) {
+ throw new SimpleParserException(
+ "Valid syntax: ${convertTo(type).OGNL} or
${convertTo(exp,type).OGNL} was: " + function,
+ token.getIndex());
+ }
+ return SimpleExpressionBuilder.convertToOgnlExpression(exp,
type, remainder);
+ } else {
+ return SimpleExpressionBuilder.convertToExpression(exp, type);
+ }
+ }
+
// uppercase function
remainder = ifStartsWithReturnRemainder("uppercase(", function);
if (remainder != null) {
@@ -2048,6 +2085,58 @@ public class SimpleFunctionExpression extends
LiteralExpression {
+ separator + ";\n return concat(exchange, left,
right, separator);";
}
+ // convertTo function
+ remainder = ifStartsWithReturnRemainder("convertTo(", function);
+ if (remainder != null) {
+ String ognl = null;
+ String exp = "body";
+ String type;
+ String values = StringHelper.before(remainder, ")");
+ if (values == null || ObjectHelper.isEmpty(values)) {
+ throw new SimpleParserException(
+ "Valid syntax: ${convertTo(type)} or
${convertTo(exp,type)} was: " + function,
+ token.getIndex());
+ }
+ if (values.contains(",")) {
+ String[] tokens = codeSplitSafe(values, ',', true, true);
+ if (tokens.length > 2) {
+ throw new SimpleParserException(
+ "Valid syntax: ${convertTo(type)} or
${convertTo(exp,type)} was: " + function,
+ token.getIndex());
+ }
+ String s = tokens[0].trim();
+ s = StringHelper.removeLeadingAndEndingQuotes(s);
+ s = StringQuoteHelper.doubleQuote(s);
+ exp = s;
+ type = tokens[1];
+ } else {
+ type = values.trim();
+ }
+ type = appendClass(type);
+ type = type.replace('$', '.');
+ if (ObjectHelper.isEmpty(exp)) {
+ exp = "null";
+ }
+
+ remainder = StringHelper.after(remainder, ")");
+ if (ObjectHelper.isNotEmpty(remainder)) {
+ boolean invalid =
OgnlHelper.isInvalidValidOgnlExpression(remainder);
+ if (invalid) {
+ throw new SimpleParserException(
+ "Valid syntax: ${convertTo(type).OGNL} or
${convertTo(exp,type).OGNL} was: " + function,
+ token.getIndex());
+ }
+ ognl = ognlCodeMethods(remainder, type);
+ }
+
+ String code = "Object value = " + exp + ";\n return
convertTo(exchange, " + type + ", value)";
+ if (ognl != null) {
+ code += ognl;
+ }
+ code += ";";
+ return code;
+ }
+
// uppercase function
remainder = ifStartsWithReturnRemainder("uppercase(", function);
if (remainder != null) {
diff --git
a/core/camel-core/src/test/java/org/apache/camel/language/simple/SimpleTest.java
b/core/camel-core/src/test/java/org/apache/camel/language/simple/SimpleTest.java
index b64005c64f81..b0605feca4e9 100644
---
a/core/camel-core/src/test/java/org/apache/camel/language/simple/SimpleTest.java
+++
b/core/camel-core/src/test/java/org/apache/camel/language/simple/SimpleTest.java
@@ -2469,6 +2469,59 @@ public class SimpleTest extends LanguageTestSupport {
assertEquals(f.length(), len);
}
+ @Test
+ public void testConvertTo() {
+ exchange.getMessage().setBody("Hello World");
+
+ Expression expression =
context.resolveLanguage("simple").createExpression("${convertTo(byte[])}");
+ Object s = expression.evaluate(exchange, Object.class);
+ assertIsInstanceOf(byte[].class, s);
+
+ // ognl
+ expression =
context.resolveLanguage("simple").createExpression("${convertTo(String).repeat(2)}");
+ s = expression.evaluate(exchange, Object.class);
+ assertIsInstanceOf(String.class, s);
+ assertEquals("Hello WorldHello World", s);
+ expression =
context.resolveLanguage("simple").createExpression("${convertTo(${body},String).substring(2)}");
+ s = expression.evaluate(exchange, Object.class);
+ assertIsInstanceOf(String.class, s);
+ assertEquals("llo World", s);
+
+ expression =
context.resolveLanguage("simple").createExpression("${convertTo(${body},byte[])}");
+ s = expression.evaluate(exchange, Object.class);
+ assertIsInstanceOf(byte[].class, s);
+
+ exchange.getMessage().setBody("987");
+ expression =
context.resolveLanguage("simple").createExpression("${convertTo(int)}");
+ s = expression.evaluate(exchange, Object.class);
+ assertIsInstanceOf(Integer.class, s);
+ assertEquals(987, s);
+
+ exchange.getMessage().setBody("true");
+ expression =
context.resolveLanguage("simple").createExpression("${convertTo(boolean)}");
+ s = expression.evaluate(exchange, Object.class);
+ assertIsInstanceOf(Boolean.class, s);
+ assertEquals(Boolean.TRUE, s);
+ }
+
+ @Test
+ public void testConvertToOGNL() {
+ exchange.getIn().setBody(new OrderLine(123, "Camel in Action"));
+
+
assertExpression("${convertTo(${body},org.apache.camel.language.simple.SimpleTest$OrderLine).getId}",
123);
+
assertExpression("${convertTo(${body},org.apache.camel.language.simple.SimpleTest$OrderLine).getName}",
+ "Camel in Action");
+ }
+
+ @Test
+ public void testConvertToOGNLArray() {
+ exchange.getIn().setBody(new SimpleTest.OrderLine(123, "Camel in
Action"));
+
+
assertExpression("${convertTo(${body},org.apache.camel.language.simple.SimpleTest$OrderLine).getId}",
123);
+
assertExpression("${convertTo(${body},org.apache.camel.language.simple.SimpleTest$OrderLine).getName}",
+ "Camel in Action");
+ }
+
@Test
public void testTrim() {
exchange.getMessage().setBody(" Hello World ");
