DeleteByPrimaryKeyMethodGenerator.java

/**
 *    Copyright 2006-2016 the original author or authors.
 *
 *    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.ibatis2.dao.elements;

import static org.mybatis.generator.internal.util.JavaBeansUtil.getSetterMethodName;

import java.util.Set;
import java.util.TreeSet;

import org.mybatis.generator.api.IntrospectedColumn;
import org.mybatis.generator.api.dom.java.FullyQualifiedJavaType;
import org.mybatis.generator.api.dom.java.Interface;
import org.mybatis.generator.api.dom.java.JavaVisibility;
import org.mybatis.generator.api.dom.java.Method;
import org.mybatis.generator.api.dom.java.Parameter;
import org.mybatis.generator.api.dom.java.TopLevelClass;

/**
 * 
 * @author Jeff Butler
 * 
 */
public class DeleteByPrimaryKeyMethodGenerator extends
        AbstractDAOElementGenerator {

    public DeleteByPrimaryKeyMethodGenerator() {
        super();
    }

    @Override
    public void addImplementationElements(TopLevelClass topLevelClass) {
        Set<FullyQualifiedJavaType> importedTypes = new TreeSet<FullyQualifiedJavaType>();
        Method method = getMethodShell(importedTypes);

        StringBuilder sb = new StringBuilder();

        if (!introspectedTable.getRules().generatePrimaryKeyClass()) {
            // no primary key class, but primary key is enabled. Primary
            // key columns must be in the base class.
            FullyQualifiedJavaType keyType = new FullyQualifiedJavaType(
                    introspectedTable.getBaseRecordType());
            topLevelClass.addImportedType(keyType);

            sb.setLength(0);
            sb.append(keyType.getShortName());
            sb.append(" _key = new "); //$NON-NLS-1$
            sb.append(keyType.getShortName());
            sb.append("();"); //$NON-NLS-1$
            method.addBodyLine(sb.toString());

            for (IntrospectedColumn introspectedColumn : introspectedTable
                    .getPrimaryKeyColumns()) {
                sb.setLength(0);
                sb.append("_key."); //$NON-NLS-1$
                sb.append(getSetterMethodName(introspectedColumn
                        .getJavaProperty()));
                sb.append('(');
                sb.append(introspectedColumn.getJavaProperty());
                sb.append(");"); //$NON-NLS-1$
                method.addBodyLine(sb.toString());
            }
        }

        sb.setLength(0);
        sb.append("int rows = "); //$NON-NLS-1$
        sb.append(daoTemplate.getDeleteMethod(introspectedTable
                .getIbatis2SqlMapNamespace(), introspectedTable
                .getDeleteByPrimaryKeyStatementId(), "_key")); //$NON-NLS-1$
        method.addBodyLine(sb.toString());
        method.addBodyLine("return rows;"); //$NON-NLS-1$

        if (context.getPlugins().clientDeleteByPrimaryKeyMethodGenerated(
                method, topLevelClass, introspectedTable)) {
            topLevelClass.addImportedTypes(importedTypes);
            topLevelClass.addMethod(method);
        }
    }

    @Override
    public void addInterfaceElements(Interface interfaze) {
        Set<FullyQualifiedJavaType> importedTypes = new TreeSet<FullyQualifiedJavaType>();
        Method method = getMethodShell(importedTypes);

        if (context.getPlugins().clientDeleteByPrimaryKeyMethodGenerated(
                method, interfaze, introspectedTable)) {
            interfaze.addImportedTypes(importedTypes);
            interfaze.addMethod(method);
        }
    }

    private Method getMethodShell(Set<FullyQualifiedJavaType> importedTypes) {
        Method method = new Method();
        method.setVisibility(JavaVisibility.PUBLIC);
        method.setReturnType(FullyQualifiedJavaType.getIntInstance());
        method.setName(getDAOMethodNameCalculator()
                .getDeleteByPrimaryKeyMethodName(introspectedTable));

        if (introspectedTable.getRules().generatePrimaryKeyClass()) {
            FullyQualifiedJavaType type = new FullyQualifiedJavaType(
                    introspectedTable.getPrimaryKeyType());
            importedTypes.add(type);
            method.addParameter(new Parameter(type, "_key")); //$NON-NLS-1$
        } else {
            for (IntrospectedColumn introspectedColumn : introspectedTable
                    .getPrimaryKeyColumns()) {
                FullyQualifiedJavaType type = introspectedColumn
                        .getFullyQualifiedJavaType();
                importedTypes.add(type);
                method.addParameter(new Parameter(type, introspectedColumn
                        .getJavaProperty()));
            }
        }

        for (FullyQualifiedJavaType fqjt : daoTemplate.getCheckedExceptions()) {
            method.addException(fqjt);
            importedTypes.add(fqjt);
        }

        context.getCommentGenerator().addGeneralMethodComment(method,
                introspectedTable);

        return method;
    }
}