| /* |
| * 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.jena.sparql.algebra.op; |
| |
| import org.apache.jena.graph.Node ; |
| import org.apache.jena.graph.NodeFactory ; |
| import org.apache.jena.sparql.algebra.Op ; |
| import org.apache.jena.sparql.algebra.OpVisitor ; |
| import org.apache.jena.sparql.algebra.Transform ; |
| import org.apache.jena.sparql.expr.ExprList ; |
| import org.apache.jena.sparql.sse.Tags ; |
| import org.apache.jena.sparql.util.NodeIsomorphismMap ; |
| |
| /** General procedure in algebra evaluation (a stored procedure facility) |
| * Syntax (ARQ extension): CALL <iri>(?x, ?y+3) |
| * |
| * See also the similar algebra form for property functions. The difference is in argument handling. |
| * A property function has a URI and two argument lists, one for subject, one for objects. |
| * A procedure is a URI and a list of arguments. |
| */ |
| public class OpProcedure extends Op1 |
| { |
| private Node procId ; |
| private ExprList args = null ; |
| |
| public OpProcedure(Node procId, ExprList args, Op op) |
| { |
| super(op) ; |
| this.args = args ; |
| this.procId = procId ; |
| } |
| |
| public OpProcedure(String iri, ExprList args, Op op) |
| { |
| this(NodeFactory.createURI(iri), args, op) ; |
| } |
| |
| @Override |
| public String getName() |
| { |
| return Tags.tagProc ; |
| } |
| |
| @Override |
| public boolean equalTo(Op other, NodeIsomorphismMap labelMap) |
| { |
| if (other == this) return true; |
| if ( ! (other instanceof OpProcedure) ) return false ; |
| OpProcedure proc = (OpProcedure)other ; |
| |
| if ( ! procId.equals(proc.procId) ) return false ; |
| if ( ! args.equals(proc.args) ) return false ; |
| |
| return getSubOp().equalTo(proc.getSubOp(), labelMap) ; |
| } |
| |
| @Override |
| public int hashCode() |
| { |
| int x = procId.hashCode() ; |
| x ^= args.hashCode() ; |
| x ^= getSubOp().hashCode() ; |
| return x ; |
| } |
| |
| @Override |
| public void visit(OpVisitor opVisitor) |
| { opVisitor.visit(this) ; } |
| |
| @Override |
| public Op apply(Transform transform, Op subOp) |
| { |
| return transform.transform(this, subOp) ; |
| } |
| |
| @Override |
| public Op1 copy(Op subOp) |
| { |
| return new OpProcedure(procId, args, subOp) ; |
| } |
| |
| public Node getProcId() |
| { |
| return procId ; |
| } |
| |
| public String getURI() |
| { |
| return procId.getURI() ; |
| } |
| |
| public ExprList getArgs() |
| { |
| return args ; |
| } |
| } |