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org.apache.commons.jelly.tags.dynabean.DynaclassTag	84%	100%

1		/*
2		* Copyright 2002,2004 The Apache Software Foundation.
3		*
4		* Licensed under the Apache License, Version 2.0 (the "License");
5		* you may not use this file except in compliance with the License.
6		* You may obtain a copy of the License at
7		*
8		* http://www.apache.org/licenses/LICENSE-2.0
9		*
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.apache.commons.jelly.tags.dynabean;
17
18		import java.util.ArrayList;
19
20		import org.apache.commons.beanutils.BasicDynaClass;
21		import org.apache.commons.beanutils.DynaClass;
22		import org.apache.commons.beanutils.DynaProperty;
23		import org.apache.commons.jelly.JellyTagException;
24		import org.apache.commons.jelly.MissingAttributeException;
25		import org.apache.commons.jelly.TagSupport;
26		import org.apache.commons.jelly.XMLOutput;
27
28		/**
29		* A tag which creates and defines and creates a DynaClass
30		* The DynaClass object is placed by name in the context,
31		* so that a DynaBean tag can use it by name to instantiate
32		* a DynaBean object
33		*
34		* @author Theo Niemeijer
35		* @version 1.0
36		*/
37		public class DynaclassTag extends TagSupport {
38
39	9	private ArrayList propList = new ArrayList();
40	9	private DynaProperty[] props = null;
41	9	private DynaClass dynaClass = null;
42
43		private String name;
44		private String var;
45
46	9	public DynaclassTag() {
47	9	}
48
49		// Tag interface
50		//-------------------------------------------------------------------------
51		public void doTag(XMLOutput output) throws MissingAttributeException, JellyTagException {
52
53	9	if (name == null) {
54	0	throw new MissingAttributeException("name");
55		}
56
57	9	if (var == null) {
58	0	var = name;
59		}
60
61		// Evaluate the body of the dynaclass definition
62	9	invokeBody(output);
63
64		// Convert the list of properties into array
65	9	props =
66		(DynaProperty[]) propList.toArray(
67		new DynaProperty[propList.size()]);
68
69	9	if (props == null) {
70	0	throw new JellyTagException("No properties list");
71		}
72
73	9	if (props.length == 0) {
74	0	throw new JellyTagException("No properties");
75		}
76
77		// Create the dynaclass with name and properties
78	9	dynaClass = (DynaClass) new BasicDynaClass(name, null, props);
79
80		// Place new dynaclass in context
81	9	context.setVariable(getVar(), dynaClass);
82	9	}
83
84		// Properties
85		//-------------------------------------------------------------------------
86
87		/**
88		* Sets the name of the new DynaClass
89		*/
90		public void setName(String name) {
91	9	this.name = name;
92	9	}
93
94		public String getVar() {
95	9	return var;
96		}
97
98		/**
99		* Sets the name of the variable to export the DynaClass instance
100		*/
101		public void setVar(String var) {
102	9	this.var = class="keyword">var;
103	9	}
104
105		protected void addDynaProperty(DynaProperty prop) {
106	21	propList.add(prop);
107	21	}
108		}

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