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org.apache.portals.graffito.jcr.query.impl.QueryManagerImpl	0%	0%

1		/*
2		* Copyright 2004-2005 The Apache Software Foundation or its licensors,
3		* as applicable.
4		*
5		* Licensed under the Apache License, Version 2.0 (the "License");
6		* you may not use this file except in compliance with the License.
7		* You may obtain a copy of the License at
8		*
9		* http://www.apache.org/licenses/LICENSE-2.0
10		*
11		* Unless required by applicable law or agreed to in writing, software
12		* distributed under the License is distributed on an "AS IS" BASIS,
13		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14		* See the License for the specific language governing permissions and
15		* limitations under the License.
16		*/
17		package org.apache.portals.graffito.jcr.query.impl;
18
19		import java.util.Map;
20
21		import org.apache.portals.graffito.jcr.mapper.Mapper;
22		import org.apache.portals.graffito.jcr.mapper.model.ClassDescriptor;
23		import org.apache.portals.graffito.jcr.query.Filter;
24		import org.apache.portals.graffito.jcr.query.Query;
25		import org.apache.portals.graffito.jcr.query.QueryManager;
26
27		public class QueryManagerImpl implements QueryManager
28		{
29
30		private Mapper mapper;
31		private Map atomicTypeConverters;
32		public QueryManagerImpl(Mapper mapper, Map atomicTypeConverters)
33	0	{
34	0	this.mapper = mapper;
35	0	this.atomicTypeConverters = atomicTypeConverters;
36	0	}
37
38		public Filter createFilter(Class classQuery)
39		{
40
41	0	return new FilterImpl(mapper.getClassDescriptor(classQuery), atomicTypeConverters, classQuery);
42		}
43
44		public Query createQuery(Filter filter)
45		{
46
47	0	return new QueryImpl(filter, mapper);
48		}
49
50		public String buildJCRExpression(Query query)
51		{
52
53	0	Filter filter = query.getFilter();
54
55	0	String jcrExp = "";
56
57		// Add scope
58	0	if ((filter.getScope() != null && ( ! filter.getScope().equals(""))))
59		{
60	0	jcrExp += "/jcr:root" + filter.getScope() + "element(*, ";
61		}
62		else
63		{
64	0	jcrExp += "//element(*, ";
65		}
66
67		// Add node type
68	0	jcrExp += this.getNodeType(filter) + ") ";
69
70		// Add filter criteria
71	0	String filterExp = ((FilterImpl)filter).getJcrExpression();
72	0	if ((filterExp != null) && ( ! filterExp.equals("")))
73		{
74	0	jcrExp += "[" + filterExp + "]";
75		}
76
77		// Add order by
78	0	jcrExp += ((QueryImpl)query).getOrderByExpression();
79
80	0	return jcrExp;
81
82		}
83
84		private String getNodeType(Filter filter)
85		{
86	0	ClassDescriptor classDescriptor = mapper.getClassDescriptor(filter.getFilterClass());
87	0	return classDescriptor.getJcrNodeType();
88
89		}
90
91		}

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