User: dsundstrom
Date: 01/08/19 20:19:55
Added: src/main/org/jboss/ejb/plugins/cmp/jdbc/metadata
JDBCFunctionMappingMetaData.java
Log:
Handles metadata about sql function mappings.
Revision Changes Path
1.1
jboss/src/main/org/jboss/ejb/plugins/cmp/jdbc/metadata/JDBCFunctionMappingMetaData.java
Index: JDBCFunctionMappingMetaData.java
===================================================================
package org.jboss.ejb.plugins.cmp.jdbc.metadata;
import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import org.jboss.ejb.DeploymentException;
import org.jboss.metadata.MetaData;
import org.w3c.dom.Element;
public final class JDBCFunctionMappingMetaData {
private final String functionName;
private final String[] sqlChunks;
private final int[] parameters;
public JDBCFunctionMappingMetaData(String functionName, String[] sqlChunks,
int[] parameters) {
this.functionName = functionName;
this.sqlChunks = sqlChunks;
this.parameters = parameters;
}
public JDBCFunctionMappingMetaData(Element element) throws DeploymentException
{
functionName = MetaData.getUniqueChildContent(element,
"function-name");
String sql = MetaData.getUniqueChildContent(element, "function-sql");
ArrayList chunkList = new ArrayList();
ArrayList parameterList = new ArrayList();
// add a dummy chunk so we can be assured that the sql started with
chunk before a number
if(sql.charAt(0) == '?') {
chunkList.add("");
}
// break the sql into chunks and parameters
StringBuffer chunk = new StringBuffer();
StringReader reader = new StringReader(sql);
try {
for(int c=reader.read(); c >= 0; c=reader.read()) {
if(c != '?') {
chunk.append((char)c);
} else {
chunkList.add(chunk.toString());
chunk = new StringBuffer();
// read the number
StringBuffer number = new StringBuffer();
for(int digit=reader.read(); digit >= 0;
digit=reader.read()) {
if(Character.isDigit((char)digit)) {
number.append((char)digit);
} else {
if(digit >= 0) {
chunk.append((char)digit);
}
break;
}
}
if(number.length() == 0) {
throw new DeploymentException("Invalid
parameter in function-sql: "+sql);
}
Integer parameter = null;
try {
parameter = new
Integer(number.toString());
} catch(NumberFormatException e) {
throw new DeploymentException("Invalid
parameter number in function-sql: number="+number+" sql="+sql);
}
parameterList.add(parameter);
}
}
} catch(IOException e) {
// will never happen because io is in memory, but required by
the interface
throw new DeploymentException("Error parsing function-sql: " +
sql);
}
chunkList.add(chunk.toString());
// save out the chunks
sqlChunks = new String[chunkList.size()];
chunkList.toArray(sqlChunks);
// save out the parameter order
parameters = new int[parameterList.size()];
for(int i=0; i<parameters.length; i++) {
parameters[i] = ((Integer)parameterList.get(i)).intValue()-1;
}
}
public String getFunctionName() {
return functionName;
}
public String getFunctionSql(String[] args) {
StringBuffer buf = new StringBuffer();
for(int i=0; i<sqlChunks.length; i++) {
buf.append(sqlChunks[i]);
if(i<parameters.length) {
buf.append(args[parameters[i]]);
}
}
return buf.toString();
}
}
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