Package org.mybatis.generator.codegen.mybatis3.xmlmapper.elements

Source Code of org.mybatis.generator.codegen.mybatis3.xmlmapper.elements.InsertElementGenerator

/*
*  Copyright 2009 The Apache Software Foundation
*
*  Licensed under the Apache License, Version 2.0 (the "License");
*  you may not use this file except in compliance with the License.
*  You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
*  Unless required by applicable law or agreed to in writing, software
*  distributed under the License is distributed on an "AS IS" BASIS,
*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*  See the License for the specific language governing permissions and
*  limitations under the License.
*/
package org.mybatis.generator.codegen.mybatis3.xmlmapper.elements;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.mybatis.generator.api.IntrospectedColumn;
import org.mybatis.generator.api.dom.OutputUtilities;
import org.mybatis.generator.api.dom.java.FullyQualifiedJavaType;
import org.mybatis.generator.api.dom.xml.Attribute;
import org.mybatis.generator.api.dom.xml.TextElement;
import org.mybatis.generator.api.dom.xml.XmlElement;
import org.mybatis.generator.codegen.mybatis3.MyBatis3FormattingUtilities;
import org.mybatis.generator.config.GeneratedKey;

/**
*
* @author Jeff Butler
*
*/
public class InsertElementGenerator extends AbstractXmlElementGenerator {

  public InsertElementGenerator() {
    super();
  }

  @Override
  public void addElements(XmlElement parentElement) {
    XmlElement answer = new XmlElement("insert"); //$NON-NLS-1$

    answer.addAttribute(new Attribute("id", introspectedTable.getInsertStatementId())); //$NON-NLS-1$

    FullyQualifiedJavaType parameterType = introspectedTable.getRules().calculateAllFieldsClass();

    answer.addAttribute(new Attribute("parameterType", //$NON-NLS-1$
        parameterType.getFullyQualifiedName()));

    context.getCommentGenerator().addComment(answer);

    GeneratedKey gk = introspectedTable.getGeneratedKey();
    if (gk != null) {
      IntrospectedColumn introspectedColumn = introspectedTable.getColumn(gk.getColumn());
      // if the column is null, then it's a configuration error. The
      // warning has already been reported
      if (introspectedColumn != null) {
        if (gk.isJdbcStandard()) {
          answer.addAttribute(new Attribute("useGeneratedKeys", "true")); //$NON-NLS-1$ //$NON-NLS-2$
          answer.addAttribute(new Attribute("keyProperty", introspectedColumn.getJavaProperty())); //$NON-NLS-1$
        } else {
          answer.addElement(getSelectKey(introspectedColumn, gk));
        }
      }
    }

    StringBuilder insertClause = new StringBuilder();
    StringBuilder valuesClause = new StringBuilder();

    insertClause.append("insert into "); //$NON-NLS-1$
    insertClause.append(introspectedTable.getFullyQualifiedTableNameAtRuntime());
    insertClause.append(" ("); //$NON-NLS-1$

    valuesClause.append("values ("); //$NON-NLS-1$

    List<String> valuesClauses = new ArrayList<String>();
    Iterator<IntrospectedColumn> iter = introspectedTable.getAllColumns().iterator();
    while (iter.hasNext()) {
      IntrospectedColumn introspectedColumn = iter.next();
      if (introspectedColumn.isIdentity()) {
        // cannot set values on identity fields
        continue;
      }

      insertClause.append(MyBatis3FormattingUtilities.getEscapedColumnName(introspectedColumn));
      valuesClause.append(MyBatis3FormattingUtilities.getParameterClause(introspectedColumn));
      if (iter.hasNext()) {
        insertClause.append(", "); //$NON-NLS-1$
        valuesClause.append(", "); //$NON-NLS-1$
      }

      if (valuesClause.length() > 80) {
        answer.addElement(new TextElement(insertClause.toString()));
        insertClause.setLength(0);
        OutputUtilities.xmlIndent(insertClause, 1);

        valuesClauses.add(valuesClause.toString());
        valuesClause.setLength(0);
        OutputUtilities.xmlIndent(valuesClause, 1);
      }
    }

    insertClause.append(')');
    answer.addElement(new TextElement(insertClause.toString()));

    valuesClause.append(')');
    valuesClauses.add(valuesClause.toString());

    for (String clause : valuesClauses) {
      answer.addElement(new TextElement(clause));
    }

    if (context.getPlugins().sqlMapInsertElementGenerated(answer, introspectedTable)) {
      parentElement.addElement(answer);
    }
  }
}
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