| /* |
| * 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.openjpa.kernel.exps; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.openjpa.kernel.StoreContext; |
| |
| /** |
| * A list of arguments to a multi-argument function. |
| * |
| * @author Abe White |
| */ |
| class Args |
| extends Val |
| implements Arguments { |
| |
| |
| private static final long serialVersionUID = 1L; |
| private final List<Value> _args = new ArrayList<>(3); |
| |
| /** |
| * Constructor. Supply values being combined. |
| */ |
| public Args(Value val1, Value val2) { |
| this(new Value[]{val1, val2}); |
| } |
| |
| public Args(Value...values) { |
| if (values == null) { |
| return; |
| } |
| for (Value v : values) { |
| if (v instanceof Args) { |
| _args.addAll(((Args)v)._args); |
| } else { |
| _args.add(v); |
| } |
| } |
| } |
| |
| @Override |
| public Value[] getValues() { |
| return _args.toArray(new Value[_args.size()]); |
| } |
| |
| @Override |
| public Class getType() { |
| return Object[].class; |
| } |
| |
| public Class[] getTypes() { |
| Class[] c = new Class[_args.size()]; |
| for (int i = 0; i < _args.size(); i++) |
| c[i] = ((Val) _args.get(i)).getType(); |
| return c; |
| } |
| |
| @Override |
| public void setImplicitType(Class type) { |
| } |
| |
| @Override |
| protected Object eval(Object candidate, Object orig, |
| StoreContext ctx, Object[] params) { |
| Object[] vals = new Object[_args.size()]; |
| for (int i = 0; i < _args.size(); i++) |
| vals[i] = ((Val) _args.get(i)).eval(candidate, orig, ctx, params); |
| return vals; |
| } |
| |
| @Override |
| public void acceptVisit(ExpressionVisitor visitor) { |
| visitor.enter(this); |
| for (Value arg : _args) { |
| ((Val) arg).acceptVisit(visitor); |
| } |
| visitor.exit(this); |
| } |
| } |