01: /**********************************************************************
02: Copyright (c) 2005 Erik Bengtson and others. All rights reserved.
03: Licensed under the Apache License, Version 2.0 (the "License");
04: you may not use this file except in compliance with the License.
05: You may obtain a copy of the License at
06:
07: http://www.apache.org/licenses/LICENSE-2.0
08:
09: Unless required by applicable law or agreed to in writing, software
10: distributed under the License is distributed on an "AS IS" BASIS,
11: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12: See the License for the specific language governing permissions and
13: limitations under the License.
14:
15: Contributors:
16: ...
17: **********************************************************************/package org.jpox.store.expression;
18:
19: /**
20: * Adapter to query expressions supported by a datastore
21: */
22: public interface ExpressionSupportedFeaturesAdapter {
23: /**
24: * Whether Boolean comparisons are supported
25: * @return whether we support Boolean comparisons.
26: **/
27: boolean supportsBooleanComparison();
28:
29: /**
30: * Whether this datastore supports the use of the escape expression
31: * in like predicates
32: * @return whether we can use the escape expression in like predicates
33: **/
34: boolean supportsEscapeExpressionInLikePredicate();
35:
36: }
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