org.springframework.data.gemfire.function.execution.AbstractFunctionTemplate.java Source code

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Here is the source code for org.springframework.data.gemfire.function.execution.AbstractFunctionTemplate.java

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/*
 * Copyright 2002-2013 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.springframework.data.gemfire.function.execution;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.gemstone.gemfire.cache.execute.Execution;
import com.gemstone.gemfire.cache.execute.Function;
import com.gemstone.gemfire.cache.execute.ResultCollector;

/**
 * 
 * The base class for Gemfire function templates used to invoke Gemfire functions
 * @author David Turanski
 *
 */
abstract class AbstractFunctionTemplate implements GemfireFunctionOperations {

    protected Log log = LogFactory.getLog(this.getClass());

    protected long timeout;
    protected volatile ResultCollector<?, ?> resultCollector;

    @Override
    public <T> Iterable<T> execute(Function function, Object... args) {
        AbstractFunctionExecution functionExecution = getFunctionExecution().setArgs(args).setFunction(function);
        return execute(functionExecution);
    }

    @Override
    public <T> T executeAndExtract(Function function, Object... args) {
        AbstractFunctionExecution functionExecution = getFunctionExecution().setArgs(args).setFunction(function);

        return this.<T>executeAndExtract(functionExecution);
    }

    @Override
    public <T> Iterable<T> execute(String functionId, Object... args) {
        AbstractFunctionExecution functionExecution = getFunctionExecution().setArgs(args)
                .setFunctionId(functionId);
        return execute(functionExecution);
    }

    @Override
    public void executeWithNoResult(String functionId, Object... args) {
        AbstractFunctionExecution functionExecution = getFunctionExecution().setArgs(args)
                .setFunctionId(functionId);
        execute(functionExecution, false);
    }

    @Override
    public <T> T executeAndExtract(String functionId, Object... args) {
        AbstractFunctionExecution functionExecution = getFunctionExecution().setArgs(args)
                .setFunctionId(functionId);
        return this.<T>executeAndExtract(functionExecution);
    }

    @Override
    public <T> T execute(GemfireFunctionCallback<T> callback) {
        Execution execution = getFunctionExecution().getExecution();
        return callback.doInGemfire(execution);
    }

    protected <T> Iterable<T> execute(AbstractFunctionExecution execution) {
        execution.setTimeout(timeout).setResultCollector(resultCollector);
        return execution.execute();
    }

    protected <T> Iterable<T> execute(AbstractFunctionExecution execution, boolean returnResult) {
        execution.setTimeout(timeout).setResultCollector(resultCollector);
        return execution.execute(returnResult);
    }

    protected <T> T executeAndExtract(AbstractFunctionExecution execution) {
        execution.setTimeout(timeout).setResultCollector(resultCollector);
        return execution.<T>executeAndExtract();
    }

    public void setTimeout(long timeout) {
        this.timeout = timeout;
    }

    public void setResultCollector(ResultCollector<?, ?> resultCollector) {
        this.resultCollector = resultCollector;
    }

    public ResultCollector<?, ?> getResultCollector() {
        return this.resultCollector;
    }

    protected abstract AbstractFunctionExecution getFunctionExecution();
}