Ali Alsuliman has uploaded a new change for review.

  https://asterix-gerrit.ics.uci.edu/2738

Change subject: [NO ISSUE][FUN] Implement array_insert() function
......................................................................

[NO ISSUE][FUN] Implement array_insert() function

- user model changes: no
- storage format changes: no
- interface changes: no

details:
This is part of implementing array functions.

Change-Id: I57d53f63086da7e9b3412bb12f9901f5f2088c54
---
A 
asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.1.ddl.sqlpp
A 
asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.2.update.sqlpp
A 
asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.3.query.sqlpp
A 
asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.4.ddl.sqlpp
A 
asterixdb/asterix-app/src/test/resources/runtimets/results/array_fun/array_insert/array_insert.3.adm
M asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
M 
asterixdb/asterix-om/src/main/java/org/apache/asterix/om/functions/BuiltinFunctions.java
A 
asterixdb/asterix-om/src/main/java/org/apache/asterix/om/typecomputer/impl/AbstractAListOrNullTypeComputer.java
M 
asterixdb/asterix-om/src/main/java/org/apache/asterix/om/typecomputer/impl/ArrayAppendTypeComputer.java
A 
asterixdb/asterix-om/src/main/java/org/apache/asterix/om/typecomputer/impl/ArrayInsertTypeComputer.java
A 
asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/evaluators/functions/ArrayInsertDescriptor.java
M 
asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/evaluators/functions/CastTypeEvaluator.java
M 
asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/functions/FunctionCollection.java
13 files changed, 445 insertions(+), 36 deletions(-)


  git pull ssh://asterix-gerrit.ics.uci.edu:29418/asterixdb 
refs/changes/38/2738/1

diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.1.ddl.sqlpp
 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.1.ddl.sqlpp
new file mode 100755
index 0000000..257c4dd
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.1.ddl.sqlpp
@@ -0,0 +1,46 @@
+/*
+ * 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.
+ */
+
+drop  dataverse TinySocial if exists;
+create  dataverse TinySocial;
+
+use TinySocial;
+
+
+create type TinySocial.TwitterUserType as
+{
+  `screen-name` : string,
+  lang : string,
+  friends_count : bigint,
+  statuses_count : bigint,
+  name : string,
+  followers_count : bigint
+};
+
+create type TinySocial.TweetMessageType as
+ closed {
+  tweetid : string,
+  user : TwitterUserType,
+  `sender-location` : point?,
+  `send-time` : datetime,
+  `referred-topics` : {{string}},
+  `message-text` : string
+};
+
+create  dataset TweetMessages(TweetMessageType) primary key tweetid hints 
(`CARDINALITY`=`100`);
\ No newline at end of file
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.2.update.sqlpp
 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.2.update.sqlpp
new file mode 100755
index 0000000..4a0e7ed
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.2.update.sqlpp
@@ -0,0 +1,22 @@
+/*
+ * 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.
+ */
+
+use TinySocial;
+
+load  dataset TweetMessages using localfs 
((`path`=`asterix_nc1://data/tinysocial/twm.adm`),(`format`=`adm`));
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.3.query.sqlpp
 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.3.query.sqlpp
new file mode 100755
index 0000000..9118fdc
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.3.query.sqlpp
@@ -0,0 +1,35 @@
+/*
+ * 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.
+ */
+
+use TinySocial;
+
+{
+  "t1": (array_insert([1,2,3], 0, "a")),
+  "t2": (array_insert([1,2,3], 3, "a")),
+  "t3": (array_insert([1,1,2,4], 3, "a")),
+  "t4": (array_insert([1,2,3], 4, "a")),  // should be null
+  "t5": (array_insert([1,2,3], -1, "a")),
+  "t6": (array_insert([1,2,3], -4, "a")), // should be null
+  "t7": (array_insert("non_array", 5, "val")),  // should be null
+  "t8": (array_insert("non_array", 5, missing)),
+  "t9": (array_insert([], 5, 10, 12.0, "sth")), // should be null
+  "t10": (array_insert([6], "a", 9)),  // should be null
+  "t11": (array_insert(null, 3, 9)),
+  "t12": (select array_insert(t.`referred-topics`, 0, 5) from TweetMessages t 
order by t.tweetid)
+};
\ No newline at end of file
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.4.ddl.sqlpp
 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.4.ddl.sqlpp
new file mode 100755
index 0000000..3f8c8ec
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/array_fun/array_insert/array_insert.4.ddl.sqlpp
@@ -0,0 +1,20 @@
+/*
+ * 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.
+ */
+
+drop  dataverse TinySocial;
\ No newline at end of file
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results/array_fun/array_insert/array_insert.3.adm
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results/array_fun/array_insert/array_insert.3.adm
new file mode 100644
index 0000000..f47af9b
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results/array_fun/array_insert/array_insert.3.adm
@@ -0,0 +1 @@
+{ "t1": [ "a", 1, 2, 3 ], "t2": [ 1, 2, 3, "a" ], "t3": [ 1, 1, 2, "a", 4 ], 
"t4": null, "t5": [ 1, 2, "a", 3 ], "t6": null, "t7": null, "t9": null, "t10": 
null, "t11": null, "t12": [ { "$1": {{ 5, "t-mobile", "customization" }} }, { 
"$1": {{ 5, "verizon", "voice-clarity" }} }, { "$1": {{ 5, "iphone", "platform" 
}} }, { "$1": {{ 5, "samsung", "voice-command" }} }, { "$1": {{ 5, "verizon", 
"shortcut-menu" }} }, { "$1": {{ 5, "motorola", "speed" }} }, { "$1": {{ 5, 
"sprint", "voice-command" }} }, { "$1": {{ 5, "motorola", "speed" }} }, { "$1": 
{{ 5, "iphone", "voice-clarity" }} }, { "$1": {{ 5, "samsung", "platform" }} }, 
{ "$1": {{ 5, "t-mobile", "shortcut-menu" }} }, { "$1": {{ 5, "verizon", 
"voicemail-service" }} } ] }
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml 
b/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
index a806bf6..cea6aa5 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
@@ -1012,6 +1012,11 @@
         <expected-error>HYR0115: Cannot compare non-primitive values (in line 
22, at column 8)</expected-error>
       </compilation-unit>
     </test-case>
+    <test-case FilePath="array_fun">
+      <compilation-unit name="array_insert">
+        <output-dir compare="Text">array_insert</output-dir>
+      </compilation-unit>
+    </test-case>
   </test-group>
   <test-group name="boolean">
     <test-case FilePath="boolean">
diff --git 
a/asterixdb/asterix-om/src/main/java/org/apache/asterix/om/functions/BuiltinFunctions.java
 
b/asterixdb/asterix-om/src/main/java/org/apache/asterix/om/functions/BuiltinFunctions.java
index da45e29..0e24bfa 100644
--- 
a/asterixdb/asterix-om/src/main/java/org/apache/asterix/om/functions/BuiltinFunctions.java
+++ 
b/asterixdb/asterix-om/src/main/java/org/apache/asterix/om/functions/BuiltinFunctions.java
@@ -55,6 +55,7 @@
 import org.apache.asterix.om.typecomputer.impl.AYearMonthDurationTypeComputer;
 import org.apache.asterix.om.typecomputer.impl.AnyTypeComputer;
 import org.apache.asterix.om.typecomputer.impl.ArrayAppendTypeComputer;
+import org.apache.asterix.om.typecomputer.impl.ArrayInsertTypeComputer;
 import org.apache.asterix.om.typecomputer.impl.ArrayRepeatTypeComputer;
 import org.apache.asterix.om.typecomputer.impl.BooleanFunctionTypeComputer;
 import org.apache.asterix.om.typecomputer.impl.BooleanOnlyTypeComputer;
@@ -194,6 +195,8 @@
             new FunctionIdentifier(FunctionConstants.ASTERIX_NS, 
"array-reverse", 1);
     public static final FunctionIdentifier ARRAY_CONTAINS =
             new FunctionIdentifier(FunctionConstants.ASTERIX_NS, 
"array-contains", 2);
+    public static final FunctionIdentifier ARRAY_INSERT =
+            new FunctionIdentifier(FunctionConstants.ASTERIX_NS, 
"array-insert", FunctionIdentifier.VARARGS);
 
     // objects
     public static final FunctionIdentifier RECORD_MERGE =
@@ -1475,6 +1478,7 @@
         addFunction(ARRAY_REPEAT, ArrayRepeatTypeComputer.INSTANCE, true);
         addFunction(ARRAY_REVERSE, AListTypeComputer.INSTANCE, true);
         addFunction(ARRAY_CONTAINS, ABooleanTypeComputer.INSTANCE, true);
+        addFunction(ARRAY_INSERT, ArrayInsertTypeComputer.INSTANCE, true);
 
         // objects
         addFunction(RECORD_MERGE, RecordMergeTypeComputer.INSTANCE, true);
diff --git 
a/asterixdb/asterix-om/src/main/java/org/apache/asterix/om/typecomputer/impl/AbstractAListOrNullTypeComputer.java
 
b/asterixdb/asterix-om/src/main/java/org/apache/asterix/om/typecomputer/impl/AbstractAListOrNullTypeComputer.java
new file mode 100755
index 0000000..ae5d9d5
--- /dev/null
+++ 
b/asterixdb/asterix-om/src/main/java/org/apache/asterix/om/typecomputer/impl/AbstractAListOrNullTypeComputer.java
@@ -0,0 +1,59 @@
+/*
+ * 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.asterix.om.typecomputer.impl;
+
+import org.apache.asterix.common.exceptions.CompilationException;
+import org.apache.asterix.common.exceptions.ErrorCode;
+import org.apache.asterix.om.pointables.base.DefaultOpenFieldType;
+import org.apache.asterix.om.typecomputer.base.AbstractResultTypeComputer;
+import org.apache.asterix.om.types.ATypeTag;
+import org.apache.asterix.om.types.AUnionType;
+import org.apache.asterix.om.types.BuiltinType;
+import org.apache.asterix.om.types.IAType;
+import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
+import org.apache.hyracks.algebricks.core.algebra.base.ILogicalExpression;
+import 
org.apache.hyracks.algebricks.core.algebra.expressions.AbstractFunctionCallExpression;
+
+public abstract class AbstractAListOrNullTypeComputer extends 
AbstractResultTypeComputer {
+    private final int minNumArgs;
+
+    protected AbstractAListOrNullTypeComputer(int minNumArgs) {
+        this.minNumArgs = minNumArgs;
+    }
+
+    @Override
+    protected IAType getResultType(ILogicalExpression expr, IAType... 
strippedInputTypes) throws AlgebricksException {
+        if (strippedInputTypes.length < minNumArgs) {
+            String functionName = ((AbstractFunctionCallExpression) 
expr).getFunctionIdentifier().getName();
+            throw new 
CompilationException(ErrorCode.COMPILATION_INVALID_NUM_OF_ARGS, 
expr.getSourceLocation(),
+                    minNumArgs, functionName);
+        }
+        // output type should be the same as as the type tag at [0] which is 
array or multiset but "open" but it's
+        // nullable since the output could be null due to other invalid 
arguments or the tag at [0] itself is not list
+        ATypeTag typeTag = strippedInputTypes[0].getTypeTag();
+        if (typeTag == ATypeTag.ARRAY) {
+            return 
AUnionType.createNullableType(DefaultOpenFieldType.NESTED_OPEN_AORDERED_LIST_TYPE);
+        } else if (typeTag == ATypeTag.MULTISET) {
+            return 
AUnionType.createNullableType(DefaultOpenFieldType.NESTED_OPEN_AUNORDERED_LIST_TYPE);
+        } else {
+            return BuiltinType.ANY;
+        }
+    }
+}
diff --git 
a/asterixdb/asterix-om/src/main/java/org/apache/asterix/om/typecomputer/impl/ArrayAppendTypeComputer.java
 
b/asterixdb/asterix-om/src/main/java/org/apache/asterix/om/typecomputer/impl/ArrayAppendTypeComputer.java
index f2fed42..a8193f1 100755
--- 
a/asterixdb/asterix-om/src/main/java/org/apache/asterix/om/typecomputer/impl/ArrayAppendTypeComputer.java
+++ 
b/asterixdb/asterix-om/src/main/java/org/apache/asterix/om/typecomputer/impl/ArrayAppendTypeComputer.java
@@ -19,36 +19,11 @@
 
 package org.apache.asterix.om.typecomputer.impl;
 
-import org.apache.asterix.common.exceptions.CompilationException;
-import org.apache.asterix.common.exceptions.ErrorCode;
-import org.apache.asterix.om.pointables.base.DefaultOpenFieldType;
-import org.apache.asterix.om.typecomputer.base.AbstractResultTypeComputer;
-import org.apache.asterix.om.types.ATypeTag;
-import org.apache.asterix.om.types.BuiltinType;
-import org.apache.asterix.om.types.IAType;
-import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
-import org.apache.hyracks.algebricks.core.algebra.base.ILogicalExpression;
-import 
org.apache.hyracks.algebricks.core.algebra.expressions.AbstractFunctionCallExpression;
-
-public class ArrayAppendTypeComputer extends AbstractResultTypeComputer {
+public class ArrayAppendTypeComputer extends AbstractAListOrNullTypeComputer {
 
     public static final ArrayAppendTypeComputer INSTANCE = new 
ArrayAppendTypeComputer();
 
-    @Override
-    protected IAType getResultType(ILogicalExpression expr, IAType... 
strippedInputTypes) throws AlgebricksException {
-        if (strippedInputTypes.length < 2) {
-            String functionName = ((AbstractFunctionCallExpression) 
expr).getFunctionIdentifier().getName();
-            throw new 
CompilationException(ErrorCode.COMPILATION_INVALID_NUM_OF_ARGS, 
expr.getSourceLocation(), 2,
-                    functionName);
-        }
-        // type tag at [0] should be array or multiset.
-        ATypeTag typeTag = strippedInputTypes[0].getTypeTag();
-        if (typeTag == ATypeTag.ARRAY) {
-            return DefaultOpenFieldType.NESTED_OPEN_AORDERED_LIST_TYPE;
-        } else if (typeTag == ATypeTag.MULTISET) {
-            return DefaultOpenFieldType.NESTED_OPEN_AUNORDERED_LIST_TYPE;
-        } else {
-            return BuiltinType.ANY;
-        }
+    private ArrayAppendTypeComputer() {
+        super(2);
     }
 }
diff --git 
a/asterixdb/asterix-om/src/main/java/org/apache/asterix/om/typecomputer/impl/ArrayInsertTypeComputer.java
 
b/asterixdb/asterix-om/src/main/java/org/apache/asterix/om/typecomputer/impl/ArrayInsertTypeComputer.java
new file mode 100755
index 0000000..5c35202
--- /dev/null
+++ 
b/asterixdb/asterix-om/src/main/java/org/apache/asterix/om/typecomputer/impl/ArrayInsertTypeComputer.java
@@ -0,0 +1,29 @@
+/*
+ * 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.asterix.om.typecomputer.impl;
+
+public class ArrayInsertTypeComputer extends AbstractAListOrNullTypeComputer {
+
+    public static final ArrayInsertTypeComputer INSTANCE = new 
ArrayInsertTypeComputer();
+
+    private ArrayInsertTypeComputer() {
+        super(3);
+    }
+}
diff --git 
a/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/evaluators/functions/ArrayInsertDescriptor.java
 
b/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/evaluators/functions/ArrayInsertDescriptor.java
new file mode 100755
index 0000000..3eefceb
--- /dev/null
+++ 
b/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/evaluators/functions/ArrayInsertDescriptor.java
@@ -0,0 +1,212 @@
+/*
+ * 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.asterix.runtime.evaluators.functions;
+
+import static 
org.apache.asterix.om.types.EnumDeserializer.ATYPETAGDESERIALIZER;
+
+import java.io.IOException;
+import java.util.Arrays;
+
+import org.apache.asterix.builders.IAsterixListBuilder;
+import org.apache.asterix.builders.OrderedListBuilder;
+import org.apache.asterix.builders.UnorderedListBuilder;
+import org.apache.asterix.om.functions.BuiltinFunctions;
+import org.apache.asterix.om.functions.IFunctionDescriptor;
+import org.apache.asterix.om.functions.IFunctionDescriptorFactory;
+import org.apache.asterix.om.functions.IFunctionTypeInferer;
+import org.apache.asterix.om.pointables.base.DefaultOpenFieldType;
+import org.apache.asterix.om.pointables.nonvisitor.AListPointable;
+import org.apache.asterix.om.types.ATypeTag;
+import org.apache.asterix.om.types.AbstractCollectionType;
+import org.apache.asterix.om.types.EnumDeserializer;
+import org.apache.asterix.om.types.IAType;
+import org.apache.asterix.om.types.hierachy.ATypeHierarchy;
+import 
org.apache.asterix.runtime.evaluators.base.AbstractScalarFunctionDynamicDescriptor;
+import org.apache.asterix.runtime.evaluators.common.ListAccessor;
+import org.apache.asterix.runtime.functions.FunctionTypeInferers;
+import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
+import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
+import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator;
+import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory;
+import org.apache.hyracks.api.context.IHyracksTaskContext;
+import org.apache.hyracks.api.exceptions.HyracksDataException;
+import org.apache.hyracks.data.std.api.IPointable;
+import org.apache.hyracks.data.std.primitive.TaggedValuePointable;
+import org.apache.hyracks.data.std.primitive.VoidPointable;
+import org.apache.hyracks.data.std.util.ArrayBackedValueStorage;
+import org.apache.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
+
+public class ArrayInsertDescriptor extends 
AbstractScalarFunctionDynamicDescriptor {
+    private static final long serialVersionUID = 1L;
+    private IAType[] argTypes;
+
+    public static final IFunctionDescriptorFactory FACTORY = new 
IFunctionDescriptorFactory() {
+        @Override
+        public IFunctionDescriptor createFunctionDescriptor() {
+            return new ArrayInsertDescriptor();
+        }
+
+        @Override
+        public IFunctionTypeInferer createFunctionTypeInferer() {
+            return FunctionTypeInferers.SET_ARGUMENTS_TYPE;
+        }
+    };
+
+    @Override
+    public FunctionIdentifier getIdentifier() {
+        return BuiltinFunctions.ARRAY_INSERT;
+    }
+
+    @Override
+    public IScalarEvaluatorFactory createEvaluatorFactory(final 
IScalarEvaluatorFactory[] args)
+            throws AlgebricksException {
+        return new IScalarEvaluatorFactory() {
+            private static final long serialVersionUID = 1L;
+
+            @Override
+            public IScalarEvaluator createScalarEvaluator(final 
IHyracksTaskContext ctx) throws HyracksDataException {
+                return new ArrayInsertFunction(args, ctx);
+            }
+        };
+    }
+
+    @Override
+    public void setImmutableStates(Object... states) {
+        argTypes = Arrays.copyOf(states, states.length, IAType[].class);
+    }
+
+    public class ArrayInsertFunction implements IScalarEvaluator {
+        private final ArrayBackedValueStorage storage;
+        private final AListPointable listArg;
+        private final TaggedValuePointable positionArg;
+        private final IPointable[] insertedValues;
+        private final IScalarEvaluator listArgEval;
+        private final IScalarEvaluator positionArgEval;
+        private final IScalarEvaluator[] insertedValuesEvals;
+        private final CastTypeEvaluator caster;
+        private final ListAccessor listAccessor;
+
+        public ArrayInsertFunction(IScalarEvaluatorFactory[] args, 
IHyracksTaskContext ctx)
+                throws HyracksDataException {
+            listAccessor = new ListAccessor();
+            storage = new ArrayBackedValueStorage();
+            caster = new CastTypeEvaluator();
+            listArg = new AListPointable();
+            positionArg = new TaggedValuePointable();
+            listArgEval = args[0].createScalarEvaluator(ctx);
+            positionArgEval = args[1].createScalarEvaluator(ctx);
+            insertedValues = new IPointable[args.length - 2];
+            insertedValuesEvals = new IScalarEvaluator[args.length - 2];
+            for (int i = 2; i < args.length; i++) {
+                insertedValues[i - 2] = new VoidPointable();
+                insertedValuesEvals[i - 2] = 
args[i].createScalarEvaluator(ctx);
+            }
+        }
+
+        @Override
+        public void evaluate(IFrameTupleReference tuple, IPointable result) 
throws HyracksDataException {
+            // 1st arg: a list into which values are to be inserted (new list 
is returned)
+            listArgEval.evaluate(tuple, listArg);
+            // 2nd arg: numeric designating the position where to insert the 
values
+            positionArgEval.evaluate(tuple, positionArg);
+
+            ATypeTag listTag =
+                    
EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(listArg.getByteArray()[listArg.getStartOffset()]);
+            // return "null" for certain cases
+            boolean returnNull = false;
+            int position = 0;
+            if (!ATypeHierarchy.isCompatible(ATypeTag.INTEGER, 
ATYPETAGDESERIALIZER.deserialize(positionArg.getTag()))
+                    || !listTag.isListType()) {
+                // don't return null right away. Evaluate rest of args as some 
may be missing, return missing instead
+                returnNull = true;
+            } else {
+                // 1st arg is list, 2nd arg is numeric, check if the position 
is valid
+                String name = getIdentifier().getName();
+                position = ATypeHierarchy.getIntegerValue(name, 1, 
positionArg.getByteArray(),
+                        positionArg.getStartOffset());
+                int listSize = listArg.getItemCount();
+                // adjust position for negative positions
+                if (position < 0) {
+                    position = listSize + position;
+                }
+                // position should always be positive now and should be within 
[0-list_size]
+                if (position < 0 || position > listSize) {
+                    returnNull = true;
+                }
+            }
+
+            // 3rd args: values to be inserted
+            IAType defaultOpenType;
+            for (int i = 0; i < insertedValuesEvals.length; i++) {
+                // cast to open if necessary
+                defaultOpenType = 
DefaultOpenFieldType.getDefaultOpenFieldType(argTypes[i + 2].getTypeTag());
+                if (defaultOpenType != null && !returnNull) {
+                    caster.reset(defaultOpenType, argTypes[i + 2], 
insertedValuesEvals[i]);
+                    caster.evaluate(tuple, insertedValues[i]);
+                } else {
+                    // either no casting is needed (e.g. int and the like) or 
avoid unnecessary casting when 1st/2nd arg
+                    // values are not valid and null might be returned in 
which case evaluate normally to check missings
+                    insertedValuesEvals[i].evaluate(tuple, insertedValues[i]);
+                }
+            }
+
+            if (returnNull) {
+                PointableHelper.setNull(result);
+                return;
+            }
+
+            // arguments are good: no nulls/missings and 1st arg is a list, 
2nd arg is numeric
+            IAsterixListBuilder listBuilder;
+            AbstractCollectionType listType;
+            if (listTag == ATypeTag.ARRAY) {
+                listBuilder = new OrderedListBuilder();
+                listType = DefaultOpenFieldType.NESTED_OPEN_AORDERED_LIST_TYPE;
+            } else {
+                listBuilder = new UnorderedListBuilder();
+                listType = 
DefaultOpenFieldType.NESTED_OPEN_AUNORDERED_LIST_TYPE;
+            }
+            caster.reset(listType, argTypes[0], listArgEval);
+            caster.evaluate(tuple, listArg);
+            listBuilder.reset(listType);
+            listAccessor.reset(listArg.getByteArray(), 
listArg.getStartOffset());
+            try {
+                int i;
+                for (i = 0; i < position; i++) {
+                    storage.reset();
+                    listAccessor.writeItem(i, storage.getDataOutput());
+                    listBuilder.addItem(storage);
+                }
+                // insert the values arguments
+                for (IPointable appendedValue : insertedValues) {
+                    listBuilder.addItem(appendedValue);
+                }
+                for (; i < listAccessor.size(); i++) {
+                    storage.reset();
+                    listAccessor.writeItem(i, storage.getDataOutput());
+                    listBuilder.addItem(storage);
+                }
+                storage.reset();
+                listBuilder.write(storage.getDataOutput(), true);
+                result.set(storage);
+            } catch (IOException e) {
+                throw HyracksDataException.create(e);
+            }
+        }
+    }
+}
diff --git 
a/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/evaluators/functions/CastTypeEvaluator.java
 
b/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/evaluators/functions/CastTypeEvaluator.java
index 7e31951..d1879b2 100644
--- 
a/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/evaluators/functions/CastTypeEvaluator.java
+++ 
b/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/evaluators/functions/CastTypeEvaluator.java
@@ -37,20 +37,18 @@
 
     private IScalarEvaluator argEvaluator;
     private final IPointable argPointable = new VoidPointable();
-
     private final PointableAllocator allocator = new PointableAllocator();
     private IVisitablePointable inputPointable;
     private IVisitablePointable resultPointable;
+    private final ACastVisitor castVisitor = createCastVisitor();
+    private final Triple<IVisitablePointable, IAType, Boolean> arg = new 
Triple<>(null, null, null);
 
-    private final ACastVisitor castVisitor;
-    private final Triple<IVisitablePointable, IAType, Boolean> arg;
+    public CastTypeEvaluator() {
+        // reset() should be called after using this constructor before 
calling any method
+    }
 
     public CastTypeEvaluator(IAType reqType, IAType inputType, 
IScalarEvaluator argEvaluator) {
-        this.argEvaluator = argEvaluator;
-        this.inputPointable = allocatePointable(inputType, reqType);
-        this.resultPointable = allocatePointable(reqType, inputType);
-        this.arg = new Triple<>(resultPointable, reqType, Boolean.FALSE);
-        this.castVisitor = createCastVisitor();
+        reset(reqType, inputType, argEvaluator);
     }
 
     public void reset(IAType reqType, IAType inputType, IScalarEvaluator 
argEvaluator) {
@@ -59,6 +57,7 @@
         this.resultPointable = allocatePointable(reqType, inputType);
         this.arg.first = resultPointable;
         this.arg.second = reqType;
+        this.arg.third = Boolean.FALSE;
     }
 
     protected ACastVisitor createCastVisitor() {
diff --git 
a/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/functions/FunctionCollection.java
 
b/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/functions/FunctionCollection.java
index 199cc40..94638e0 100644
--- 
a/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/functions/FunctionCollection.java
+++ 
b/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/functions/FunctionCollection.java
@@ -145,6 +145,7 @@
 import 
org.apache.asterix.runtime.evaluators.functions.AnyCollectionMemberDescriptor;
 import org.apache.asterix.runtime.evaluators.functions.ArrayAppendDescriptor;
 import org.apache.asterix.runtime.evaluators.functions.ArrayContainsDescriptor;
+import org.apache.asterix.runtime.evaluators.functions.ArrayInsertDescriptor;
 import org.apache.asterix.runtime.evaluators.functions.ArrayPositionDescriptor;
 import org.apache.asterix.runtime.evaluators.functions.ArrayRepeatDescriptor;
 import org.apache.asterix.runtime.evaluators.functions.ArrayReverseDescriptor;
@@ -381,6 +382,7 @@
         fc.addGenerated(ArrayRepeatDescriptor.FACTORY);
         fc.addGenerated(ArrayReverseDescriptor.FACTORY);
         fc.addGenerated(ArrayContainsDescriptor.FACTORY);
+        fc.addGenerated(ArrayInsertDescriptor.FACTORY);
 
         // unnesting functions
         fc.add(TidRunningAggregateDescriptor.FACTORY);

-- 
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I57d53f63086da7e9b3412bb12f9901f5f2088c54
Gerrit-PatchSet: 1
Gerrit-Project: asterixdb
Gerrit-Branch: master
Gerrit-Owner: Ali Alsuliman <ali.al.solai...@gmail.com>

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