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Cayenne Object Persistence Framework
/*****************************************************************
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
****************************************************************/
package org.apache.cayenne.access.trans;
import java.sql.Types;
import org.apache.cayenne.map.DbAttribute;
import org.apache.cayenne.map.DbRelationship;
/**
* QualifierTranslator that allows translation of qualifiers that perform
* comparison with CHAR columns. Some databases require trimming the values for
* this to work.
*
* @author Andrei Adamchik
*/
public class TrimmingQualifierTranslator extends QualifierTranslator {
protected String trimFunction;
/**
* Constructor for TrimmingQualifierTranslator.
*/
protected TrimmingQualifierTranslator() {
super();
}
/**
* Constructor for TrimmingQualifierTranslator.
*/
public TrimmingQualifierTranslator(
QueryAssembler queryAssembler,
String trimFunction) {
super(queryAssembler);
this.trimFunction = trimFunction;
}
/**
* Adds special handling of CHAR columns.
*/
protected void processColumn(StringBuffer buf, DbAttribute dbAttr) {
if (dbAttr.getType() == Types.CHAR) {
buf.append(trimFunction).append("(");
super.processColumn(buf, dbAttr);
buf.append(')');
} else {
super.processColumn(buf, dbAttr);
}
}
/**
* Adds special handling of CHAR columns.
*/
protected void processColumn(
StringBuffer buf,
DbAttribute dbAttr,
DbRelationship rel) {
if (dbAttr.getType() == Types.CHAR) {
buf.append(trimFunction).append("(");
super.processColumn(buf, dbAttr, rel);
buf.append(')');
} else {
super.processColumn(buf, dbAttr, rel);
}
}
/**
* Returns the trimFunction.
* @return String
*/
public String getTrimFunction() {
return trimFunction;
}
/**
* Sets the trimFunction.
* @param trimFunction The trimFunction to set
*/
public void setTrimFunction(String trimFunction) {
this.trimFunction = trimFunction;
}
}
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