org.springframework.data.gemfire.function.execution.GroupMembersFunctionExecution Maven / Gradle / Ivy
/*
* Copyright 2002-2020 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
*
* https://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.geode.cache.execute.Execution;
import org.apache.geode.cache.execute.Function;
import org.apache.geode.cache.execute.FunctionService;
import org.springframework.util.Assert;
/**
* Constructs an {@link Execution} using {@link FunctionService#onMembers(String...)}.
*
* @author David Turanski
* @author John Blum
* @see org.apache.geode.cache.execute.Execution
* @see org.apache.geode.cache.execute.Function
* @see org.apache.geode.cache.execute.FunctionService
* @see org.springframework.data.gemfire.function.execution.AbstractFunctionExecution
*/
class GroupMembersFunctionExecution extends AbstractFunctionExecution {
private final String[] groups;
/**
* Constructs a new instance of {@link GroupMembersFunctionExecution} initialized to execute a data independent
* {@link Function} on all members from each of the specified {@link String groups}.
*
* @param groups array of {@link String groups} indicating the members on which to execute
* the data independent {@link Function}.
* @throws IllegalArgumentException if {@link String groups} is {@literal null} or empty.
*/
public GroupMembersFunctionExecution(String... groups) {
Assert.notEmpty(groups, "Groups must not be null or empty");
this.groups = groups;
}
protected String[] getGroups() {
return this.groups;
}
/**
* Executes the data independent Function on all members from each of the specified groups.
*
* @return an Execution to execute the Function.
* @see org.apache.geode.cache.execute.FunctionService#onMembers(String...)
*/
@Override
protected Execution getExecution() {
return FunctionService.onMembers(getGroups());
}
}