org.springframework.data.gemfire.function.execution.GroupMemberFunctionExecution Maven / Gradle / Ivy
/*
* 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.springframework.util.Assert;
import com.gemstone.gemfire.cache.execute.Execution;
import com.gemstone.gemfire.cache.execute.FunctionService;
/**
* @author David Turanski
* @author John Blum
* @see org.springframework.data.gemfire.function.execution.AbstractFunctionExecution
* @see com.gemstone.gemfire.cache.execute.Execution
* @see com.gemstone.gemfire.cache.execute.FunctionService
*/
class GroupMemberFunctionExecution extends AbstractFunctionExecution {
private final String[] groups;
/**
* Constructs an instance of the GroupMemberFunctionExecution class to execute a data independent Function
* on a single member from each of the specified groups.
*
* @param groups the list of GemFire Groups from which to pick a member from each group on which to execute
* the data independent Function.
*/
public GroupMemberFunctionExecution(final String... groups) {
Assert.notEmpty(groups, "'groups' cannot be null or empty.");
this.groups = groups;
}
/**
* Executes the data independent Function on a single member from each of the specified groups.
*
* @return an Execution to execute the Function.
* @see com.gemstone.gemfire.cache.execute.FunctionService#onMember(String...)
*/
@Override
protected Execution getExecution() {
return FunctionService.onMember(this.groups);
}
}