01: /*
02: * Copyright 2004 Outerthought bvba and Schaubroeck nv
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16: package org.outerj.daisy.query;
17:
18: import org.outerj.daisy.query.model.PredicateExpr;
19: import org.outerj.daisy.query.model.Query;
20: import org.outerj.daisy.query.model.Expression;
21: import org.outerj.daisy.repository.query.QueryException;
22:
23: public interface QueryFactory {
24: /**
25: * Parses a predicate expression, i.e. the where part of query statement.
26: *
27: * <p>The returned condition will not yet have been "prepared", so you need
28: * to call its prepare method yourself.
29: */
30: public PredicateExpr parsePredicateExpression(String expression)
31: throws QueryException;
32:
33: /**
34: * Parses an expression, the returned expression is either a PredicateExpr
35: * or a ValueExpr.
36: */
37: public Expression parseExpression(String expression)
38: throws QueryException;
39:
40: public Query parseQuery(String query) throws QueryException;
41: }
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