com.wavemaker.runtime.data.transform.AliasToEntityLinkedHashMapTransformer Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (C) 2022-2023 WaveMaker, Inc.
*
* 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.wavemaker.runtime.data.transform;
import java.util.LinkedHashMap;
import java.util.Map;
import org.hibernate.transform.AliasedTupleSubsetResultTransformer;
/**
* @author Anusha Dharmasagar
* @since 27/6/16
*/
public class AliasToEntityLinkedHashMapTransformer extends AliasedTupleSubsetResultTransformer implements
WMResultTransformer {
public static final AliasToEntityLinkedHashMapTransformer INSTANCE = new AliasToEntityLinkedHashMapTransformer();
AliasToEntityLinkedHashMapTransformer() {
}
@Override
public Object transformTuple(Object[] tuple, String[] aliases) {
Map result = new LinkedHashMap<>(tuple.length);
for (int i = 0; i < tuple.length; i++) {
result.put(WMResultTransformer.getAlias(aliases, i), tuple[i]);
}
return result;
}
@Override
public Object transformFromMap(final Map resultMap) {
Map result = resultMap;
if (!(resultMap instanceof LinkedHashMap)) {
result = new LinkedHashMap<>(resultMap);
}
return result;
}
@Override
public String aliasToFieldName(final String columnName) {
return columnName;
}
@Override
public String aliasFromFieldName(final String fieldName) {
return fieldName;
}
@Override
public boolean containsField(final String fieldName) {
return true;
}
@Override
public boolean isTransformedValueATupleElement(String[] aliases, int tupleLength) {
return false;
}
/**
* Serialization hook for ensuring singleton uniqueing.
*
* @return The singleton instance : {@link #INSTANCE}
*/
private Object readResolve() {
return INSTANCE;
}
}