/*
* Copyright 2010 Outerthought bvba
*
* 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 org.lilyproject.repository.impl.id;
import java.util.Collections;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.SortedMap;
import java.util.TreeMap;
import org.lilyproject.bytes.api.DataInput;
import org.lilyproject.bytes.api.DataOutput;
import org.lilyproject.bytes.impl.DataOutputImpl;
import org.lilyproject.repository.api.RecordId;
public class VariantRecordId implements RecordId {
private final RecordId masterRecordId;
private final SortedMap<String, String> variantProperties;
private final IdGeneratorImpl idGenerator;
private byte[] recordIdBytes;
private String recordIdString;
protected VariantRecordId(RecordId masterRecordId, Map<String, String> variantProperties,
IdGeneratorImpl idGenerator) {
this.masterRecordId = masterRecordId;
SortedMap<String, String> varProps = createVariantPropertiesMap();
varProps.putAll(variantProperties);
this.variantProperties = Collections.unmodifiableSortedMap(varProps);
this.idGenerator = idGenerator;
}
protected VariantRecordId(RecordId masterRecordId, DataInput dataInput, IdGeneratorImpl idGenerator) {
this.masterRecordId = masterRecordId;
this.idGenerator = idGenerator;
SortedMap<String, String> varProps = createVariantPropertiesMap();
while (dataInput.getPosition() < dataInput.getSize()) {
String dimension = dataInput.readVUTF();
String dimensionValue = dataInput.readVUTF();
IdGeneratorImpl.checkVariantPropertyNameValue(dimension);
IdGeneratorImpl.checkVariantPropertyNameValue(dimensionValue);
varProps.put(dimension, dimensionValue);
}
this.variantProperties = Collections.unmodifiableSortedMap(varProps);
}
private SortedMap<String, String> createVariantPropertiesMap() {
// Make sure they are always sorted the same way
return new TreeMap<String, String>();
}
public String toString() {
if (recordIdString == null) {
recordIdString = idGenerator.toString(this);
}
return recordIdString;
}
@Override
public byte[] toBytes() {
if (recordIdBytes == null) {
DataOutput dataOutput = new DataOutputImpl();
writeBytes(dataOutput);
recordIdBytes = dataOutput.toByteArray();
}
return recordIdBytes;
}
@Override
public final void writeBytes(DataOutput dataOutput) {
if (recordIdBytes == null) {
masterRecordId.writeBytes(dataOutput);
// TODO this needs to be designed some other way
if (masterRecordId instanceof UserRecordId) {
dataOutput.writeByte((byte) 0);
}
Set<Entry<String, String>> entrySet = variantProperties.entrySet();
for (Entry<String, String> entry : entrySet) {
// entry consists of the dimension and the dimension value
dataOutput.writeVUTF(entry.getKey());
dataOutput.writeVUTF(entry.getValue());
}
} else {
dataOutput.writeBytes(recordIdBytes);
}
}
@Override
public RecordId getMaster() {
return masterRecordId;
}
@Override
public boolean isMaster() {
return false;
}
@Override
public SortedMap<String, String> getVariantProperties() {
return variantProperties;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((masterRecordId == null) ? 0 : masterRecordId.hashCode());
result = prime * result + ((variantProperties == null) ? 0 : variantProperties.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
VariantRecordId other = (VariantRecordId) obj;
if (masterRecordId == null) {
if (other.masterRecordId != null) {
return false;
}
} else if (!masterRecordId.equals(other.masterRecordId)) {
return false;
}
if (variantProperties == null) {
if (other.variantProperties != null) {
return false;
}
} else if (!variantProperties.equals(other.variantProperties)) {
return false;
}
return true;
}
}