/* 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.camunda.bpm.engine.rest.sub.history.impl;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import javax.ws.rs.core.Response.Status;
import org.camunda.bpm.engine.ProcessEngine;
import org.camunda.bpm.engine.history.HistoricDetail;
import org.camunda.bpm.engine.history.HistoricDetailQuery;
import org.camunda.bpm.engine.history.HistoricVariableUpdate;
import org.camunda.bpm.engine.rest.dto.history.HistoricDetailDto;
import org.camunda.bpm.engine.rest.exception.InvalidRequestException;
import org.camunda.bpm.engine.rest.sub.history.HistoricDetailResource;
import org.camunda.bpm.engine.variable.type.ValueType;
/**
* @author Daniel Meyer
*
*/
public class HistoricDetailResourceImpl implements HistoricDetailResource {
protected String detailId;
protected ProcessEngine engine;
public HistoricDetailResourceImpl(String detailId, ProcessEngine engine) {
this.detailId = detailId;
this.engine = engine;
}
public HistoricDetailDto getDetail(boolean deserializeObjectValue) {
HistoricDetailQuery query = baseQuery().disableBinaryFetching();
if (!deserializeObjectValue) {
query.disableCustomObjectDeserialization();
}
HistoricDetail detail = query.singleResult();
if(detail != null) {
return HistoricDetailDto.fromHistoricDetail(detail);
} else {
throw new InvalidRequestException(Status.NOT_FOUND, "Historic detail with Id '"+detailId + "' does not exist.");
}
}
public InputStream getBinaryVariable() {
HistoricDetail historicDetail = baseQuery()
.disableCustomObjectDeserialization()
.singleResult();
if(historicDetail != null) {
if(!(historicDetail instanceof HistoricVariableUpdate)) {
throw new InvalidRequestException(Status.BAD_REQUEST, "Historic detail with Id '"+detailId + "' is not a variable update.");
}
HistoricVariableUpdate update = (HistoricVariableUpdate) historicDetail;
if (ValueType.BYTES.getName().equals(update.getTypeName())) {
byte[] valueBytes = (byte[]) update.getValue();
if (valueBytes == null) {
valueBytes = new byte[0];
}
return new ByteArrayInputStream(valueBytes);
} else {
throw new InvalidRequestException(Status.BAD_REQUEST,
String.format("Value of variable %s is not a binary value.", detailId));
}
} else {
throw new InvalidRequestException(Status.NOT_FOUND, "Historic detail instance with Id '"+detailId + "' does not exist.");
}
}
protected HistoricDetailQuery baseQuery() {
return engine.getHistoryService()
.createHistoricDetailQuery()
.detailId(detailId);
}
}