/*
* #!
* Ontopia Engine
* #-
* Copyright (C) 2001 - 2013 The Ontopia Project
* #-
* 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 net.ontopia.topicmaps.query.impl.basic;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import net.ontopia.topicmaps.query.core.InvalidQueryException;
import net.ontopia.topicmaps.query.core.ParsedQueryIF;
import net.ontopia.topicmaps.query.core.QueryResultIF;
import net.ontopia.topicmaps.query.parser.TologQuery;
import net.ontopia.topicmaps.query.parser.Variable;
/**
* INTERNAL: Class used to represent parsed queries. The class wraps a
* query executer and a tolog query intance (as generated by the
* parser). The actual query execution is delegated to the query
* processor.
*/
public class ParsedQuery implements ParsedQueryIF {
protected TologQuery query;
protected QueryProcessor processor;
public ParsedQuery(QueryProcessor processor, TologQuery query) {
this.processor = processor;
this.query = query;
}
public List getClauses() {
return query.getClauses();
}
/// ParsedQueryIF implementation [the class does not implement the interface]
public List<String> getSelectedVariables() {
return getVariables(query.getSelectedVariables());
}
public Collection<String> getAllVariables() {
return getVariables(query.getAllVariables());
}
public Collection<String> getCountedVariables() {
return getVariables(query.getCountedVariables());
}
public List<String> getOrderBy() {
return getVariables(query.getOrderBy());
}
public boolean isOrderedAscending(String name) {
return query.isOrderedAscending(name);
}
public QueryResultIF execute() throws InvalidQueryException {
return processor.execute(query);
}
public QueryResultIF execute(Map<String, ?> arguments) throws InvalidQueryException {
return processor.execute(query, arguments);
}
/// Object implementation
public String toString() {
return query.toString();
}
protected List<String> getVariables(Collection<Variable> varnames) {
List<String> results = new ArrayList<String>(varnames.size());
Iterator<Variable> iter = varnames.iterator();
while (iter.hasNext()) {
results.add(iter.next().getName());
}
return results;
}
public Object[] getVariableTypes(String varname) {
return (Object[]) query.getVariableTypes().get(varname);
}
}