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1   /**
2    *    Copyright 2006-2016 the original author or authors.
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.mybatis.generator.codegen.mybatis3.xmlmapper.elements;
17  
18  import org.mybatis.generator.api.IntrospectedColumn;
19  import org.mybatis.generator.api.dom.xml.Attribute;
20  import org.mybatis.generator.api.dom.xml.TextElement;
21  import org.mybatis.generator.api.dom.xml.XmlElement;
22  import org.mybatis.generator.codegen.mybatis3.MyBatis3FormattingUtilities;
23  
24  /**
25   * 
26   * @author Jeff Butler
27   * 
28   */
29  public class UpdateByExampleSelectiveElementGenerator extends
30          AbstractXmlElementGenerator {
31  
32      public UpdateByExampleSelectiveElementGenerator() {
33          super();
34      }
35  
36      @Override
37      public void addElements(XmlElement parentElement) {
38          XmlElement answer = new XmlElement("update"); //$NON-NLS-1$
39  
40          answer
41                  .addAttribute(new Attribute(
42                          "id", introspectedTable.getUpdateByExampleSelectiveStatementId())); //$NON-NLS-1$
43  
44          answer.addAttribute(new Attribute("parameterType", "map")); //$NON-NLS-1$ //$NON-NLS-2$
45  
46          context.getCommentGenerator().addComment(answer);
47  
48          StringBuilder sb = new StringBuilder();
49          sb.append("update "); //$NON-NLS-1$
50          sb.append(introspectedTable
51                  .getAliasedFullyQualifiedTableNameAtRuntime());
52          answer.addElement(new TextElement(sb.toString()));
53  
54          XmlElement dynamicElement = new XmlElement("set"); //$NON-NLS-1$
55          answer.addElement(dynamicElement);
56  
57          for (IntrospectedColumn introspectedColumn : introspectedTable
58                  .getAllColumns()) {
59              XmlElement isNotNullElement = new XmlElement("if"); //$NON-NLS-1$
60              sb.setLength(0);
61              sb.append(introspectedColumn.getJavaProperty("record.")); //$NON-NLS-1$
62              sb.append(" != null"); //$NON-NLS-1$
63              isNotNullElement.addAttribute(new Attribute("test", sb.toString())); //$NON-NLS-1$
64              dynamicElement.addElement(isNotNullElement);
65  
66              sb.setLength(0);
67              sb.append(MyBatis3FormattingUtilities
68                      .getAliasedEscapedColumnName(introspectedColumn));
69              sb.append(" = "); //$NON-NLS-1$
70              sb.append(MyBatis3FormattingUtilities.getParameterClause(
71                      introspectedColumn, "record.")); //$NON-NLS-1$
72              sb.append(',');
73  
74              isNotNullElement.addElement(new TextElement(sb.toString()));
75          }
76  
77          answer.addElement(getUpdateByExampleIncludeElement());
78  
79          if (context.getPlugins()
80                  .sqlMapUpdateByExampleSelectiveElementGenerated(answer,
81                          introspectedTable)) {
82              parentElement.addElement(answer);
83          }
84      }
85  }