/*
* Copyright 2008 FatWire Corporation. All Rights Reserved.
*
* Licensed 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 com.fatwire.gst.foundation.facade.runtag.vdm;
import COM.FutureTense.Interfaces.ICS;
import com.fatwire.gst.foundation.facade.runtag.TagRunner;
/**
* Sets an alias ONLY if it has not been set before. Avoids unnecessary DB
* thrash.
*
* @author Tony Field
* @since Sep 29, 2008
* @deprecated - com.fatwire.gst.foundation.facade and all subpackages have moved to the tools.gsf.facade package
*/
public class SetAliasWithoutReset implements TagRunner {
private final String key;
private final String value;
public SetAliasWithoutReset(final String key, final String value) {
super();
this.key = key;
this.value = value;
}
public String execute(final ICS ics) {
final String varname = "alias" + ics.genID(true);
try {
GetAlias getAlias = new GetAlias(key, varname);
String getResult = getAlias.execute(ics);
String alias = ics.GetVar(varname);
if (alias != null && alias.equals(value) || alias == null && value == null) {
// nothing to do. this saves a lot of processing
return getResult;
}
SetAlias setAlias = new SetAlias(key, value);
return setAlias.execute(ics);
} finally {
// cleaning up
ics.RemoveVar(varname);
}
}
public String getValue() {
return value;
}
public String getKey() {
return key;
}
}