[jena] branch master updated: FunctionBase5: 5 argument abstract class for filter functions.

[an...@apache.org]

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andy pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/jena.git


The following commit(s) were added to refs/heads/master by this push:
     new 03cf7b7  FunctionBase5: 5 argument abstract class for filter functions.
     new 7a41565  Merge pull request #525 from galbiston/function_base_5
03cf7b7 is described below

commit 03cf7b75f2da4028783f4c2d1183d6d6a03a2928
Author: Greg Albiston <46...@users.noreply.github.com>
AuthorDate: Mon Jan 21 16:02:05 2019 +0000

    FunctionBase5: 5 argument abstract class for filter functions.
---
 .../apache/jena/sparql/function/FunctionBase5.java | 61 ++++++++++++++++++++++
 1 file changed, 61 insertions(+)

diff --git a/jena-arq/src/main/java/org/apache/jena/sparql/function/FunctionBase5.java b/jena-arq/src/main/java/org/apache/jena/sparql/function/FunctionBase5.java
new file mode 100644
index 0000000..35c14e5
--- /dev/null
+++ b/jena-arq/src/main/java/org/apache/jena/sparql/function/FunctionBase5.java
@@ -0,0 +1,61 @@
+/*
+ * 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.function;
+
+import java.util.List;
+import org.apache.jena.atlas.lib.Lib;
+import org.apache.jena.query.QueryBuildException;
+import org.apache.jena.sparql.ARQInternalErrorException;
+import org.apache.jena.sparql.expr.ExprEvalException;
+import org.apache.jena.sparql.expr.ExprList;
+import org.apache.jena.sparql.expr.NodeValue;
+
+/**
+ * Support for a function of one argument.
+ */
+public abstract class FunctionBase5 extends FunctionBase {
+
+    @Override
+    public void checkBuild(String uri, ExprList args) {
+        if (args.size() != 5) {
+            throw new QueryBuildException("Function '" + Lib.className(this) + "' takes five arguments");
+        }
+    }
+
+    @Override
+    public final NodeValue exec(List<NodeValue> args) {
+        if (args == null) // The contract on the function interface is that this should not happen.
+        {
+            throw new ARQInternalErrorException(Lib.className(this) + ": Null args list");
+        }
+
+        if (args.size() != 5) {
+            throw new ExprEvalException(Lib.className(this) + ": Wrong number of arguments: Wanted 5, got " + args.size());
+        }
+
+        NodeValue v1 = args.get(0);
+        NodeValue v2 = args.get(1);
+        NodeValue v3 = args.get(2);
+        NodeValue v4 = args.get(3);
+        NodeValue v5 = args.get(4);
+
+        return exec(v1, v2, v3, v4, v5);
+    }
+
+    public abstract NodeValue exec(NodeValue v1, NodeValue v2, NodeValue v3, NodeValue v4, NodeValue v5);
+}