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https://issues.apache.org/jira/browse/PHOENIX-1978?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14573580#comment-14573580
]
James Taylor commented on PHOENIX-1978:
---------------------------------------
+1. Thanks for the patch, [~rajeshbabu].
> UDF ArgumentTypeMismatchException
> ---------------------------------
>
> Key: PHOENIX-1978
> URL: https://issues.apache.org/jira/browse/PHOENIX-1978
> Project: Phoenix
> Issue Type: Bug
> Reporter: alex kamil
> Assignee: Rajeshbabu Chintaguntla
> Fix For: 4.4.1
>
> Attachments: PHOENIX-1978.patch
>
>
> I created a sample UDF with Phoenix 4.4 by copying ARRAY_ELEM function
> (https://github.com/apache/phoenix/blob/master/phoenix-core/src/main/java/org/apache/phoenix/expression/function/ArrayIndexFunction.java)
> and removing the BuiltInFunction annotation
> after deploying to the server and running the following queries it throws an
> exception below
> create function UDF_ARRAY_ELEM(VARCHAR ARRAY, INTEGER) returns "VARCHAR" as
> 'com.test.ArrayIndexFunction' using jar '/tmp/udf.jar'
> CREATE TABLE TESTTABLE10(ID VARCHAR NOT NULL, NAME VARCHAR ARRAY, CITY
> VARCHAR ARRAY CONSTRAINT pk PRIMARY KEY (ID) )
> UPSERT INTO TESTTABLE10(ID,NAME,CITY) VALUES('111',
> ARRAY['JOHN','MIKE','BOB'], ARRAY['NYC','LA','SF'])
> UPSERT INTO TESTTABLE10(ID,NAME,CITY) VALUES('112',
> ARRAY['CHEN','CARL','ALICE'], ARRAY['BOSTON','WASHINGTON','PALO ALTO'])
> SELECT ID, UDF_ARRAY_ELEM(NAME, 2) FROM TESTTABLE10
> org.apache.phoenix.schema.ArgumentTypeMismatchException: ERROR 203 (22005):
> Type mismatch. expected: [INTEGER ARRAY] but was: INTEGER at UDF_ARRAY_ELEM
> argument 2
> at
> org.apache.phoenix.parse.FunctionParseNode.validate(FunctionParseNode.java:195)
> at
> org.apache.phoenix.compile.ExpressionCompiler.visitLeave(ExpressionCompiler.java:326)
> at
> org.apache.phoenix.compile.ProjectionCompiler$SelectClauseVisitor.visitLeave(ProjectionCompiler.java:637)
> at
> org.apache.phoenix.compile.ProjectionCompiler$SelectClauseVisitor.visitLeave(ProjectionCompiler.java:538)
> at
> org.apache.phoenix.parse.FunctionParseNode.accept(FunctionParseNode.java:85)Hbase>
> at
> org.apache.phoenix.compile.ProjectionCompiler.compile(ProjectionCompiler.java:396)
> at
> org.apache.phoenix.compile.QueryCompiler.compileSingleFlatQuery(QueryCompiler.java:537)
> at
> org.apache.phoenix.compile.QueryCompiler.compileSingleQuery(QueryCompiler.java:488)
> at
> org.apache.phoenix.compile.QueryCompiler.compileSelect(QueryCompiler.java:200)
> at
> org.apache.phoenix.compile.QueryCompiler.compile(QueryCompiler.java:157)
> at
> org.apache.phoenix.jdbc.PhoenixStatement$ExecutableSelectStatement.compilePlan(PhoenixStatement.java:361)
> at
> org.apache.phoenix.jdbc.PhoenixStatement$ExecutableSelectStatement.compilePlan(PhoenixStatement.java:335)
> at
> org.apache.phoenix.jdbc.PhoenixStatement$1.call(PhoenixStatement.java:243)
> at
> org.apache.phoenix.jdbc.PhoenixStatement$1.call(PhoenixStatement.java:238)
> at org.apache.phoenix.call.CallRunner.run(CallRunner.java:53)
> at
> org.apache.phoenix.jdbc.PhoenixStatement.executeQuery(PhoenixStatement.java:237)
> at
> org.apache.phoenix.jdbc.PhoenixPreparedStatement.executeQuery(PhoenixPreparedStatement.java:187)
> at CustomSQL.openTerminal(CustomSQL.java:45)
> at CustomSQL.main(CustomSQL.java:19)
> udf function:
> package com.test;
> import java.util.List;
> import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
> import org.apache.phoenix.expression.Expression;
> import org.apache.phoenix.expression.function.ScalarFunction;
> import org.apache.phoenix.parse.FunctionParseNode.Argument;
> import org.apache.phoenix.parse.FunctionParseNode.BuiltInFunction;
> import org.apache.phoenix.parse.ParseException;
> import org.apache.phoenix.schema.types.PBinaryArray;
> import org.apache.phoenix.schema.types.PInteger;
> import org.apache.phoenix.schema.types.PArrayDataType;
> import org.apache.phoenix.schema.types.PDataType;
> import org.apache.phoenix.schema.types.PVarbinaryArray;
> import org.apache.phoenix.schema.SortOrder;
> import org.apache.phoenix.schema.tuple.Tuple;
> /*@BuiltInFunction(name = ArrayIndexFunction.NAME, args = {
> @Argument(allowedTypes = { PBinaryArray.class,
> PVarbinaryArray.class }),
> @Argument(allowedTypes = { PInteger.class }) })
> */
> public class ArrayIndexFunction extends ScalarFunction {
> public static final String NAME = "UDF_ARRAY_ELEM";
> public ArrayIndexFunction() {
> }
> public ArrayIndexFunction(List<Expression> children) {
> super(children);
> }
> @Override
> public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) {
> Expression indexExpr = children.get(1);
> if (!indexExpr.evaluate(tuple, ptr)) {
> return false;
> } else if (ptr.getLength() == 0) {
> return true;
> }
> // Use Codec to prevent Integer object allocation
> int index = PInteger.INSTANCE.getCodec().decodeInt(ptr,
> indexExpr.getSortOrder());
> if(index < 0) {
> throw new ParseException("Index cannot be negative :" +
> index);
> }
> Expression arrayExpr = children.get(0);
> return PArrayDataType.positionAtArrayElement(tuple, ptr, index,
> arrayExpr, getDataType(), getMaxLength());
> }
> @Override
> public PDataType getDataType() {
> return
> PDataType.fromTypeId(children.get(0).getDataType().getSqlType() -
> PDataType.ARRAY_TYPE_BASE);
> }
>
> @Override
> public Integer getMaxLength() {
> return this.children.get(0).getMaxLength();
> }
> @Override
> public String getName() {
> return NAME;
> }
>
> @Override
> public SortOrder getSortOrder() {
> return this.children.get(0).getSortOrder();
> }
> }
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