xavifeds8 commented on code in PR #2398: URL: https://github.com/apache/phoenix/pull/2398#discussion_r3108793354
########## phoenix-core-client/src/main/java/org/apache/phoenix/expression/function/RegexpLikeFunction.java: ########## @@ -0,0 +1,230 @@ +/* + * 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.phoenix.expression.function; + +import java.io.DataInput; +import java.io.IOException; +import java.util.List; +import org.apache.hadoop.hbase.io.ImmutableBytesWritable; +import org.apache.phoenix.expression.Determinism; +import org.apache.phoenix.expression.Expression; +import org.apache.phoenix.expression.util.regex.AbstractBasePattern; +import org.apache.phoenix.parse.FunctionParseNode; +import org.apache.phoenix.parse.FunctionParseNode.Argument; +import org.apache.phoenix.parse.FunctionParseNode.BuiltInFunction; +import org.apache.phoenix.parse.RegexpLikeParseNode; +import org.apache.phoenix.schema.SortOrder; +import org.apache.phoenix.schema.tuple.Tuple; +import org.apache.phoenix.schema.types.PBoolean; +import org.apache.phoenix.schema.types.PDataType; +import org.apache.phoenix.schema.types.PVarchar; + +/** + * Function similar to Oracle's REGEXP_LIKE, which tests whether a string matches a regular + * expression pattern. Usage: {@code REGEXP_LIKE(<source_char>, <pattern> [, <match_parameter>]) } + * <p> + * source_char is the string to search. pattern is a Java compatible regular expression string. + * match_parameter is an optional string of flags that modify matching behavior: + * <ul> + * <li>'i' - case-insensitive matching</li> + * <li>'c' - case-sensitive matching (default)</li> + * <li>'m' - multiline mode (^ and $ match line boundaries). Note: with full-match semantics, 'm' + * has limited use on its own; it is most useful combined with 's'. May become independently useful + * if partial-match semantics are adopted in the future.</li> + * <li>'s' - dotall mode (. matches any character including newline)</li> + * </ul> + * The function returns a {@link org.apache.phoenix.schema.types.PBoolean}. + * @since 5.3 Review Comment: Hello @virajjasani i have added the differences between like and regexp_like as a part of javadoc. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
