/**
* 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.atlas.typesystem.types;
import com.google.common.collect.ImmutableMap;
import org.apache.atlas.AtlasException;
import org.apache.atlas.typesystem.persistence.DownCastStructInstance;
public class DownCastFieldMapping {
public final ImmutableMap<String, String> fieldNameMap;
protected DownCastFieldMapping(ImmutableMap<String, String> fieldNameMap) {
this.fieldNameMap = fieldNameMap;
}
public void set(DownCastStructInstance s, String attrName, Object val) throws AtlasException {
String mappedNm = fieldNameMap.get(attrName);
if (mappedNm == null) {
throw new ValueConversionException(s.getTypeName(), val, "Unknown field " + attrName);
}
s.backingInstance.set(mappedNm, val);
}
public Object get(DownCastStructInstance s, String attrName) throws AtlasException {
String mappedNm = fieldNameMap.get(attrName);
if (mappedNm == null) {
throw new ValueConversionException(
String.format("Unknown field %s for Struct %s", attrName, s.getTypeName()));
}
return s.backingInstance.get(mappedNm);
}
}