/*
* Copyright 2013 Esri.
*
* 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.esri.gpt.control.webharvest.client.dcat;
import com.esri.gpt.control.webharvest.IterationContext;
import com.esri.gpt.control.webharvest.client.waf.DestroyableResource;
import com.esri.gpt.control.webharvest.common.CommonResult;
import com.esri.gpt.framework.resource.adapters.LimitedLengthResourcesAdapter;
import com.esri.gpt.framework.resource.query.Criteria;
import com.esri.gpt.framework.resource.query.Query;
import com.esri.gpt.framework.resource.query.Result;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* DCAT query.
*/
class DCATQuery implements Query {
/** logger */
private static final Logger LOGGER = Logger.getLogger(DCATQuery.class.getCanonicalName());
/** iteration context */
private IterationContext context;
/** service info */
private DCATInfo info;
/** query criteria */
private Criteria criteria;
/**
* Creates instance of the query.
* @param context iteration context
* @param info DCAT info
* @param criteria harvest criteria
*/
public DCATQuery(IterationContext context, DCATInfo info, Criteria criteria) {
if (context == null) {
throw new IllegalArgumentException("No context provided.");
}
if (info == null) {
throw new IllegalArgumentException("No info provided.");
}
this.context = context;
this.info = info;
this.criteria = criteria;
}
@Override
public Result execute() {
LOGGER.log(Level.FINER, "Executing query: {0}", this);
final DestroyableResource root = new DCATRootResource(context, info);
Result r = new CommonResult(new LimitedLengthResourcesAdapter(root,criteria.getMaxRecords())) {
@Override
public void destroy() {
root.destroy();
info.destroy();
}
};
LOGGER.log(Level.FINER, "Completed query execution: {0}", this);
return r;
}
@Override
public String toString() {
return "{protocol: " + info + ", criteria:" + criteria + "}";
}
}