org.apache.oodt.cas.cli.option.handler.ApplyToActionHandler.java Source code

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Here is the source code for org.apache.oodt.cas.cli.option.handler.ApplyToActionHandler.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.oodt.cas.cli.option.handler;

//OODT static imports
import static org.apache.oodt.cas.cli.util.CmdLineUtils.convertToType;

//JDK imports
import java.util.Arrays;
import java.util.List;

//Apache imports
import org.apache.commons.lang.StringUtils;

//OODT imports
import org.apache.oodt.cas.cli.action.CmdLineAction;
import org.apache.oodt.cas.cli.option.CmdLineOption;
import org.apache.oodt.cas.cli.option.CmdLineOptionInstance;

//Google imports
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.Lists;

/**
 * {@link CmdLineOptionHandler} which applies {@link CmdLineOption} values to
 * given {@link CmdLineAction}.  If {@link CmdLineOption} is a repeating option
 * then "add<long-name>" is invoked on {@link CmdLineAction}, otherwise
 * "set<long-name" is invoked, unless the method name was supplied, then that
 * method will be invoked.
 * 
 * @author bfoster (Brian Foster)
 */
public class ApplyToActionHandler implements CmdLineOptionHandler {

    private List<ApplyToAction> applyToActions;

    public void setApplyToActions(List<ApplyToAction> applyToActions) {
        this.applyToActions = applyToActions;
    }

    public List<ApplyToAction> getApplyToActions() {
        return applyToActions;
    }

    public void initialize(CmdLineOption option) {
        // Do nothing.
    }

    public void handleOption(CmdLineAction action, CmdLineOptionInstance optionInstance) {
        try {
            Class<?> type = optionInstance.getOption().getType();
            List<?> vals = (optionInstance.getValues().isEmpty())
                    ? convertToType(Arrays.asList(new String[] { "true" }), type = Boolean.TYPE)
                    : convertToType(optionInstance.getValues(), type);
            String methodName = getMethodName(action.getName());
            if (methodName != null) {
                action.getClass().getMethod(methodName, type).invoke(action, vals.toArray(new Object[vals.size()]));
            } else {
                action.getClass()
                        .getMethod((optionInstance.getOption().isRepeating() ? "add" : "set")
                                + StringUtils.capitalize(optionInstance.getOption().getLongOption()), type)
                        .invoke(action, vals.toArray(new Object[vals.size()]));
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    @VisibleForTesting
    protected String getMethodName(String actionName) {
        if (applyToActions != null) {
            for (ApplyToAction applyToAction : applyToActions) {
                if (applyToAction.getActionName().equals(actionName)) {
                    return applyToAction.getMethodName();
                }
            }
        }
        return null;
    }

    @VisibleForTesting
    protected String getDescription(String actionName) {
        if (applyToActions != null) {
            for (ApplyToAction applyToAction : applyToActions) {
                if (applyToAction.getActionName().equals(actionName)) {
                    return applyToAction.getDescription();
                }
            }
        }
        return null;
    }

    @VisibleForTesting
    protected String getArgDescription(String actionName) {
        if (applyToActions != null) {
            for (ApplyToAction applyToAction : applyToActions) {
                if (applyToAction.getActionName().equals(actionName)) {
                    return applyToAction.getArgDescription();
                }
            }
        }
        return null;
    }

    public String getHelp(CmdLineOption option) {
        return "Will invoke '" + (option.isRepeating() ? "add" : "set")
                + StringUtils.capitalize(option.getLongOption())
                + "' on action selected, except for the following actions: "
                + (applyToActions != null ? applyToActions : Lists.newArrayList());
    }

    public String getDescription(CmdLineAction action, CmdLineOption option) {
        return getDescription(action.getName());
    }

    public String getArgDescription(CmdLineAction action, CmdLineOption option) {
        return getArgDescription(action.getName());
    }
}