/*
* 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.oodt.cas.catalog.cli.action;
//JDK imports
import java.util.HashSet;
import java.util.List;
import java.util.Set;
//Apache imports
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.Validate;
//OODT imports
import org.apache.oodt.cas.catalog.metadata.TransactionalMetadata;
import org.apache.oodt.cas.catalog.page.Page;
import org.apache.oodt.cas.catalog.page.PageInfo;
import org.apache.oodt.cas.catalog.query.QueryExpression;
import org.apache.oodt.cas.catalog.query.parser.QueryParser;
import org.apache.oodt.cas.cli.exception.CmdLineActionException;
/**
* A {@link CmdLineAction} which queries Catalog Service.
*
* @author bfoster (Brian Foster)
*/
public class ReducedPagedQueryCliAction extends CatalogServiceCliAction {
protected int pageNum = -1;
protected int pageSize = -1;
protected String query;
protected Set<String> catalogIds;
protected List<String> termNames;
@Override
public void execute(ActionMessagePrinter printer)
throws CmdLineActionException {
try {
Validate.isTrue(pageNum != -1, "Must specify pageNum");
Validate.isTrue(pageSize != -1, "Must specify pageSize");
Validate.notNull(query, "Must specify query");
Validate.notNull(termNames, "Must specify termNames");
QueryExpression queryExpression = QueryParser
.parseQueryExpression(query);
Page page = null;
if (catalogIds == null) {
page = getClient().getPage(new PageInfo(pageSize, pageNum),
queryExpression);
} else {
page = getClient().getPage(new PageInfo(pageSize, pageNum),
queryExpression, catalogIds);
}
List<TransactionalMetadata> transactionMetadatas = getClient()
.getMetadata(page);
for (TransactionalMetadata tMet : transactionMetadatas) {
StringBuffer sb = new StringBuffer("");
for (String termName : this.termNames) {
List<String> values = tMet.getMetadata().getAllMetadata(
(String) termName);
sb.append(termName
+ " = '"
+ (values == null ? "null" : StringUtils.join(
values.iterator(), ",")) + "', ");
}
printer.println(sb.substring(0, sb.length() - 2));
}
} catch (Exception e) {
throw new CmdLineActionException("Failed to perform query '" + query
+ "' : " + e.getMessage(), e);
}
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public void setPageNum(int pageNum) {
this.pageNum = pageNum;
}
public void setQuery(String query) {
this.query = query;
}
public void setCatalogIds(List<String> catalogIds) {
this.catalogIds = new HashSet<String>(catalogIds);
}
public void setReducedTerms(List<String> termNames) {
this.termNames = termNames;
}
}