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* 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
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
****************************************************************/
package org.apache.cayenne.access.translator.select;
import java.sql.Types;
import org.apache.cayenne.exp.Expression;
import org.apache.cayenne.map.DbAttribute;
/**
* QualifierTranslator that allows translation of qualifiers that perform
* comparison with CHAR columns. Some databases require trimming the values for
* this to work.
*
*/
public class TrimmingQualifierTranslator extends QualifierTranslator {
protected String trimFunction;
/**
* Constructor for TrimmingQualifierTranslator.
*/
public TrimmingQualifierTranslator(QueryAssembler queryAssembler, String trimFunction) {
super(queryAssembler);
this.trimFunction = trimFunction;
}
/**
* Adds special handling of CHAR columns.
*/
@Override
protected void processColumn(DbAttribute dbAttr) {
if (dbAttr.getType() == Types.CHAR) {
out.append(trimFunction).append("(");
super.processColumn(dbAttr);
out.append(')');
} else {
super.processColumn(dbAttr);
}
}
/**
* Adds special handling of CHAR columns.
*/
@Override
protected void processColumnWithQuoteSqlIdentifiers(DbAttribute dbAttr, Expression pathExp) {
if (dbAttr.getType() == Types.CHAR) {
out.append(trimFunction).append("(");
super.processColumnWithQuoteSqlIdentifiers(dbAttr, pathExp);
out.append(')');
} else {
super.processColumnWithQuoteSqlIdentifiers(dbAttr, pathExp);
}
}
/**
* 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;
}
}