01: /*
02: * (c) Copyright 2006 by Volker Bergmann. All rights reserved.
03: *
04: * Redistribution and use in source and binary forms, with or without
05: * modification, is permitted under the terms of the
06: * GNU General Public License.
07: *
08: * For redistributing this software or a derivative work under a license other
09: * than the GPL-compatible Free Software License as defined by the Free
10: * Software Foundation or approved by OSI, you must first obtain a commercial
11: * license to this software product from Volker Bergmann.
12: *
13: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
14: * WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
15: * REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
16: * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
17: * HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
18: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24: * POSSIBILITY OF SUCH DAMAGE.
25: */
26:
27: package org.databene.benerator;
28:
29: import org.databene.commons.Validator;
30:
31: /**
32: * Generator proxy that uses another generator for creating values and filters out invalid ones.
33: * @see ValidatingGenerator<br/>
34: * <br/>
35: * Created: 29.08.2006 08:27:11
36: */
37: public class ValidatingGeneratorProxy<E> extends ValidatingGenerator<E> {
38:
39: /** The source generator to use */
40: private Generator<E> source;
41:
42: /** Constructor with the source generator and the validator to use */
43: public ValidatingGeneratorProxy(Generator<E> source,
44: Validator<E> validator) {
45: super (validator);
46: this .source = source;
47: }
48:
49: // Generator & ValidatingGenerator implementation ------------------------------------------------------------------
50:
51: public Class<E> getGeneratedType() {
52: return source.getGeneratedType();
53: }
54:
55: /**
56: * Callback method implementation from ValidatingGenerator.
57: * This calls the source's generate() method and returns its result.
58: */
59: protected E generateImpl() {
60: return source.generate();
61: }
62:
63: public void validate() {
64: source.validate();
65: }
66:
67: /** Calls the reset() method on the source generator */
68: public void reset() {
69: source.reset();
70: }
71:
72: /** Calls the close() method on the source generator */
73: public void close() {
74: source.close();
75: }
76:
77: public boolean available() {
78: return source.available();
79: }
80:
81: public String toString() {
82: return getClass().getSimpleName() + '[' + source + ']';
83: }
84: }
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