com.viiyue.plugins.mybatis.scripting.parser.BridgeMethod Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of mybatis-mapper Show documentation

Mybatis generic mapper plugin for solving most basic operations, simplifying sql syntax and improving dynamic execution efficiency

There is a newer version: 1.3.7

Show newest version

/**
 * 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.scripting.parser;

import java.lang.reflect.Method;

import org.apache.ibatis.mapping.MappedStatement;

import com.viiyue.plugins.mybatis.annotation.mark.Reference;
import com.viiyue.plugins.mybatis.utils.MethodUtil;
import com.viiyue.plugins.mybatis.utils.StringUtil;

/**
 * Mapper bridging method, mainly used to package some auxiliary information.
 * 
 * @author tangxbai
 * @since 1.1.0
 */
public final class BridgeMethod {

	/** Dynamic provider method */
	private Method providerMethod;
	
	/** Mapper interface method */
	private Method interfaceMethod;
	
	/** The text appended before the return value */
	private String prepend;
	
	/** Append text at the end of the return value */
	private String append;

	protected BridgeMethod( Method providerMethod, Method interfaceMethod ) {
		this( providerMethod, interfaceMethod, null );
	}

	protected BridgeMethod( Method providerMethod, Method interfaceMethod, Reference reference ) {
		this.providerMethod = providerMethod;
		this.interfaceMethod = interfaceMethod;
		if ( reference != null ) {
			this.prepend = reference.prepend();
			this.append = reference.append();
		}
	}

	public Method getProviderMethod() {
		return providerMethod;
	}

	public Method getInterfaceMethod() {
		return interfaceMethod;
	}

	public String getPrefix() {
		return prepend;
	}

	public String getSuffix() {
		return append;
	}

	public String getInterfaceMethodName() {
		return interfaceMethod.getName();
	}

	public String getProviderMethodName() {
		return providerMethod.getName();
	}

	public Class getInterfaceMethodReturnType() {
		return providerMethod.getReturnType();
	}

	public Class getProviderMethodReturnType() {
		return providerMethod.getReturnType();
	}

	public void useReference( Reference reference ) {
		if ( reference != null ) {
			this.prepend = reference.prepend();
			this.append = reference.prepend();
		}
	}

	public String getWrappedResult( Object returnValue ) {
		if ( returnValue == null ) {
			return null;
		}
		String result = returnValue.toString();
		if ( StringUtil.isNotEmpty( prepend ) ) {
			result = prepend + result;
		}
		if ( StringUtil.isNotEmpty( append ) ) {
			result += append;
		}
		return result;
	}

	public Object getReturnValue( Object instance, MappedStatement ms, Class modelBeanType ) {
		Object returnValue = null;
		try {
			returnValue = MethodUtil.invoke( instance, providerMethod, ms );
		} catch ( Exception e ) {
			returnValue = MethodUtil.invoke( instance, providerMethod, ms, modelBeanType );
		}
		return returnValue;
	}

}