com.viiyue.plugins.mybatis.template.builder.OptimisticLockBuilder Maven / Gradle / Ivy
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/**
* Copyright (C) 2017 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 com.viiyue.plugins.mybatis.template.builder;
import com.viiyue.plugins.mybatis.enums.ValueStyle;
import com.viiyue.plugins.mybatis.metadata.Entity;
import com.viiyue.plugins.mybatis.metadata.Property;
import com.viiyue.plugins.mybatis.metadata.info.VersionInfo;
import com.viiyue.plugins.mybatis.template.builder.base.TemplateBuilder;
import com.viiyue.plugins.mybatis.utils.BuilderUtil;
/**
*
* Database optimistic lock builder, this class method will be called by reflection after
* the template syntax is parsed.
*
*
Static template: @{this.tryOptimisticLock.xxx}
*
*
Note: What is a {@code static} template?
* Is the template content that will be compiled during the startup process.
*
* @author tangxbai
* @since 1.1.0
*/
public final class OptimisticLockBuilder extends TemplateBuilder {
private final VersionInfo info;
private final ColumnBuilder column;
private String alias;
private String prefix;
private String modifier;
public OptimisticLockBuilder( Entity entity ) {
super( entity );
this.info = entity.getVersionInfo();
this.column = new ColumnBuilder( entity );
}
public OptimisticLockBuilder alias( String alias ) {
this.alias = BuilderUtil.getPrefix( alias );
return this;
}
public OptimisticLockBuilder prefix( String prefix ) {
this.prefix = BuilderUtil.getWrappedPrefix( prefix );
return this;
}
/**
* @since 1.1.0
* @deprecated Please use {@link #useWhereQuery()} instead
*/
@Deprecated
public OptimisticLockBuilder useWhere() {
return useWhereQuery();
}
/** @since 1.2.0 */
public OptimisticLockBuilder useWhereQuery() {
this.modifier = "[where] ";
return this;
}
/**
* @since 1.1.0
* @deprecated Please use {@link #useAndQuery()} instead
*/
@Deprecated
public OptimisticLockBuilder useAnd() {
return useAndQuery();
}
/** @since 1.2.0 */
public OptimisticLockBuilder useAndQuery() {
this.modifier = "[and] ";
return this;
}
/**
* @since 1.1.0
* @deprecated Please use {@link #useOrQuery()} instead
*/
@Deprecated
public OptimisticLockBuilder useOr() {
return useOrQuery();
}
/** @since 1.2.0 */
public OptimisticLockBuilder useOrQuery() {
this.modifier = "[or] ";
return this;
}
@Override
protected void finalConfirmation( Entity entity ) {
if ( entity.hasOptimisticLock() ) {
Property property = info.getProperty();
ValueStyle valueStyle = entity.getValueStyle();
this.append( modifier );
this.append( prefix ).append( info.getColumn().getWrappedName() );
this.append( " = " );
this.append( valueStyle.format( column.apply( property ).alias( alias ) ) );
}
}
}