com.netsteadfast.greenstep.base.chain.SimpleChain.java Source code

Introduction

Here is the source code for com.netsteadfast.greenstep.base.chain.SimpleChain.java

Source

/* 
 * Copyright 2012-2016 bambooCORE, greenstep of copyright Chen Xin Nien
 * 
 * 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.
 * 
 * -----------------------------------------------------------------------
 * 
 * author:    Chen Xin Nien
 * contact: chen.xin.nien@gmail.com
 * 
 */
package com.netsteadfast.greenstep.base.chain;

import org.apache.commons.chain.Catalog;
import org.apache.commons.chain.Command;
import org.apache.commons.chain.Context;
import org.apache.commons.chain.config.ConfigParser;
import org.apache.commons.chain.impl.CatalogFactoryBase;
import org.apache.commons.chain.impl.ChainBase;
import org.apache.commons.chain.impl.ContextBase;
import org.apache.commons.lang3.StringUtils;

import com.netsteadfast.greenstep.base.ChainConstants;
import com.netsteadfast.greenstep.base.model.ChainResultObj;

public class SimpleChain extends ChainBase {

    public SimpleChain() {
        super();
    }

    public Catalog getCatalog(String resourceConfig, String catalogName) throws Exception {
        ConfigParser parser = new ConfigParser();
        parser.parse(this.getClass().getResource(resourceConfig));
        Catalog catalog = CatalogFactoryBase.getInstance().getCatalog(catalogName);
        return catalog;
    }

    private ChainResultObj getResult(Context context) throws Exception {
        ChainResultObj resultObj = new ChainResultObj();
        resultObj.setValue(context.get(ChainConstants.CHAIN_RESULT));
        resultObj.setMessage(StringUtils.defaultString((String) context.get(ChainConstants.CHAIN_MESSAGE)));
        return resultObj;
    }

    public ChainResultObj getResultFromClass(Class<Command>[] clazz) throws Exception {
        Context context = new ContextBase();
        return this.getResultFromClass(clazz, context);
    }

    public ChainResultObj getResultFromResource(String commandName) throws Exception {
        Context context = new ContextBase();
        return this.getResultFromResource(commandName, context);
    }

    public ChainResultObj getResultFromClass(Class<Command>[] clazz, Context context) throws Exception {
        for (int i = 0; i < clazz.length; i++) {
            this.addCommand(clazz[i].newInstance());
        }
        this.execute(context);
        return this.getResult(context);
    }

    public ChainResultObj getResultFromResource(String commandName, Context context) throws Exception {
        Catalog catalog = this.getCatalog(ChainConstants.CHAIN_RESOURCE_CONFIG, ChainConstants.CHAIN_CATALOG);
        this.addCommand(catalog.getCommand(commandName));
        this.execute(context);
        return this.getResult(context);
    }

}