Author: sandygao
Date: Fri Aug 26 17:18:55 2011
New Revision: 1162177
URL: http://svn.apache.org/viewvc?rev=1162177&view=rev
Log:
Fix bug in CTA XPath evaluation, to mimic fn:boolean in handling of boolean and
string values.
Modified:
xerces/java/branches/xml-schema-1.1-dev/src/org/apache/xerces/impl/xpath/XPath20.java
Modified:
xerces/java/branches/xml-schema-1.1-dev/src/org/apache/xerces/impl/xpath/XPath20.java
URL:
http://svn.apache.org/viewvc/xerces/java/branches/xml-schema-1.1-dev/src/org/apache/xerces/impl/xpath/XPath20.java?rev=1162177&r1=1162176&r2=1162177&view=diff
==============================================================================
---
xerces/java/branches/xml-schema-1.1-dev/src/org/apache/xerces/impl/xpath/XPath20.java
(original)
+++
xerces/java/branches/xml-schema-1.1-dev/src/org/apache/xerces/impl/xpath/XPath20.java
Fri Aug 26 17:18:55 2011
@@ -359,13 +359,30 @@ class CastNode extends XPathSyntaxTreeNo
public boolean evaluate(QName element, XMLAttributes attributes,
NamespaceContext nsContext) throws Exception {
Object obj = getValue(attributes, nsContext);
- XSSimpleTypeDecl simpleType = (XSSimpleTypeDecl)
dvFactory.getBuiltInType(getTypeName());
- if (simpleType.getNumeric()) {
- return obj != null && 0.0 != ((Double) obj).doubleValue();
- }
- else {
- return obj != null;
+ // Implement XPath fn:boolean() function:
+ // If $arg is the empty sequence, fn:boolean returns false.
+ // TODO: how is this checked?
+ if (obj == null) {
+ return false;
+ }
+ // If $arg is a sequence whose first item is a node, fn:boolean
returns true.
+ // TODO: how to implement this?
+ // If $arg is a singleton value of type xs:boolean or a derived from
xs:boolean, fn:boolean returns $arg.
+ if (obj instanceof Boolean) {
+ return ((Boolean)obj).booleanValue();
+ }
+ // If $arg is a singleton value of type xs:string or a type derived
from xs:string, xs:anyURI or a type derived from xs:anyURI or xs:untypedAtomic,
fn:boolean returns false if the operand value has zero length; otherwise it
returns true.
+ if (obj instanceof String) {
+ return ((String)obj).length() > 0;
+ }
+ // If $arg is a singleton value of any numeric type or a type derived
from a numeric type, fn:boolean returns false if the operand value is NaN or is
numerically equal to zero; otherwise it returns true.
+ // TODO: should check type and handle different numeric types
differntly
+ if (obj instanceof Double) {
+ return ((Double)obj).doubleValue() != 0;
}
+ // In all other cases, fn:boolean raises a type error [err:FORG0006].
+ // TODO: need to distinguish between node (true) and other simple
types (false).
+ return true;
}
public Object getValue(XMLAttributes attributes, NamespaceContext
nsContext) throws Exception {
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