com.blazebit.persistence.view.impl.objectbuilder.mapper.TupleParameterMapper Maven / Gradle / Ivy
/*
* Copyright 2014 - 2020 Blazebit.
*
* 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.blazebit.persistence.view.impl.objectbuilder.mapper;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import com.blazebit.persistence.ParameterHolder;
/**
*
* @author Christian Beikov
* @since 1.0.0
*/
public class TupleParameterMapper {
private final String[] parameterMappings;
private final int[] parameterIndices;
public TupleParameterMapper(List fullParamMappings, int startIndex) {
String[] paramMappings = new String[fullParamMappings.size()];
int[] paramIndices = new int[fullParamMappings.size()];
int size = 0;
for (int i = 0; i < fullParamMappings.size(); i++) {
if (fullParamMappings.get(i) != null) {
paramMappings[size] = fullParamMappings.get(i);
paramIndices[size] = i + startIndex;
size++;
}
}
this.parameterMappings = Arrays.copyOf(paramMappings, size);
this.parameterIndices = Arrays.copyOf(paramIndices, size);
}
public void applyMapping(ParameterHolder parameterHolder, Map optionalParameters, Object[] tuple) {
for (int i = 0; i < parameterMappings.length; i++) {
if (parameterHolder.isParameterSet(parameterMappings[i])) {
tuple[parameterIndices[i]] = parameterHolder.getParameterValue(parameterMappings[i]);
} else {
tuple[parameterIndices[i]] = optionalParameters.get(parameterMappings[i]);
}
}
}
}