AbstractDatatype


1   /*
2    * Copyright 1999-2004 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.cocoon.woody.datatype.typeimpl;
17  
18  import java.util.ArrayList  ;
19  import java.util.Iterator  ;
20  import java.util.List  ;
21  import java.util.Locale  ;
22  
23  import org.apache.cocoon.woody.datatype.Datatype;
24  import org.apache.cocoon.woody.datatype.DatatypeBuilder;
25  import org.apache.cocoon.woody.datatype.ValidationError;
26  import org.apache.cocoon.woody.datatype.ValidationRule;
27  import org.apache.cocoon.woody.datatype.convertor.Convertor;
28  import org.outerj.expression.ExpressionContext;
29  
30  /**
31   * Abstract base class for Datatype implementations. Most concreate datatypes
32   * will derive from this class.
33   * @version $Id: AbstractDatatype.java 30932 2004-07-29 17:35:38Z vgritsenko $
34   */
35  public abstract class AbstractDatatype implements Datatype {
36      private List   validationRules = new ArrayList  ();
37      private boolean arrayType = false;
38      private DatatypeBuilder builder;
39      private Convertor convertor;
40  
41      public ValidationError validate(Object   value, ExpressionContext expressionContext) {
42          Iterator   validationRulesIt = validationRules.iterator();
43          while (validationRulesIt.hasNext()) {
44              ValidationRule validationRule = (ValidationRule)validationRulesIt.next();
45              ValidationError result = validationRule.validate(value, expressionContext);
46              if (result != null)
47                  return result;
48          }
49          return null;
50      }
51  
52      public void addValidationRule(ValidationRule validationRule) {
53          validationRules.add(validationRule);
54      }
55  
56      public boolean isArrayType() {
57          return arrayType;
58      }
59  
60      protected void setArrayType(boolean arrayType) {
61          this.arrayType = arrayType;
62      }
63  
64      protected void setConvertor(Convertor convertor) {
65          this.convertor = convertor;
66      }
67  
68      protected void setBuilder(DatatypeBuilder builder) {
69          this.builder = builder;
70      }
71  
72      public Convertor getPlainConvertor() {
73          return builder.getPlainConvertor();
74      }
75  
76      public DatatypeBuilder getBuilder() {
77          return builder;
78      }
79  
80      public Convertor getConvertor() {
81          return convertor;
82      }
83  
84      public Object   convertFromString(String   value, Locale   locale) {
85          return getConvertor().convertFromString(value, locale, null);
86      }
87  
88      public String   convertToString(Object   value, Locale   locale) {
89          return getConvertor().convertToString(value, locale, null);
90      }
91  }
92
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