org.springframework.data.gemfire.function.DefaultFunctionArgumentResolver 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;
import java.lang.reflect.Method;
import org.apache.geode.cache.execute.FunctionContext;
/**
* @author David Turanski
* @author John Blum
* @since 1.3.0
*/
class DefaultFunctionArgumentResolver implements FunctionArgumentResolver {
private static final Object[] EMPTY_ARRAY = new Object[0];
/*
* (non-Javadoc)
* @see java.lang.reflect.Method
*/
@Override
public Method getFunctionAnnotatedMethod() {
throw new UnsupportedOperationException("Not Implemented!");
}
/*
* (non-Javadoc)
* @see org.springframework.data.gemfire.function.FunctionArgumentResolver#resolveFunctionArguments(org.apache.geode.cache.execute.FunctionContext)
*/
@Override
public Object[] resolveFunctionArguments(final FunctionContext functionContext) {
return isArray(functionContext.getArguments())
? toObjectArray((Object[]) functionContext.getArguments())
: getArguments(functionContext);
}
private boolean isArray(final Object value) {
return value != null && value.getClass().isArray();
}
private Object[] toObjectArray(final Object[] arguments) {
Object[] result = new Object[arguments.length];
System.arraycopy(arguments, 0, result, 0, arguments.length);
return result;
}
private Object[] getArguments(final FunctionContext context) {
Object arguments = context.getArguments();
return arguments != null ? new Object[] { arguments } : EMPTY_ARRAY;
}
}