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.ArrayFormat;
30:
31: /**
32: * Wraps several other generators (in a <i>sources</i> property) and refines a composite state from them.<br/>
33: * <br/>
34: * Created: 19.12.2006 07:05:29
35: */
36: public abstract class MultiGeneratorWrapper<S, P> implements
37: Generator<P> {
38:
39: protected Generator<S>[] sources;
40:
41: public MultiGeneratorWrapper(Generator<S>... sources) {
42: setSources(sources);
43: }
44:
45: public void setSources(Generator<S>... sources) {
46: this .sources = sources;
47: }
48:
49: public Generator<S> getSource(int index) {
50: return sources[index];
51: }
52:
53: public Generator<S>[] getSources() {
54: return sources;
55: }
56:
57: public void validate() {
58: if (sources.length == 0)
59: throw new InvalidGeneratorSetupException("sources",
60: "is empty");
61: for (Generator<S> source : sources)
62: source.validate();
63: }
64:
65: public boolean available() {
66: for (Generator<S> source : sources)
67: if (!source.available())
68: return false;
69: return true;
70: }
71:
72: public void reset() {
73: for (Generator<S> source : sources)
74: source.reset();
75: }
76:
77: public void close() {
78: for (Generator<S> source : sources)
79: source.close();
80: }
81:
82: public String toString() {
83: return getClass().getSimpleName() + '['
84: + ArrayFormat.format(sources) + ']';
85: }
86:
87: }
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