lyy-pineapple commented on code in PR #38171: URL: https://github.com/apache/spark/pull/38171#discussion_r1142860063
########## sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/regexpExpressionsJoni.scala: ########## @@ -0,0 +1,471 @@ +/* + * 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.spark.sql.catalyst.expressions + +import java.util.Locale + +import scala.collection.JavaConverters._ + +import org.apache.commons.text.StringEscapeUtils +import org.jcodings.specific.UTF8Encoding +import org.joni.{Option, Regex, Syntax} + +import org.apache.spark.sql.catalyst.InternalRow +import org.apache.spark.sql.catalyst.expressions.codegen._ +import org.apache.spark.sql.catalyst.expressions.codegen.Block._ +import org.apache.spark.sql.catalyst.trees.TreePattern.{LIKE_FAMLIY, TreePattern} +import org.apache.spark.sql.catalyst.util.StringUtils +import org.apache.spark.sql.types._ +import org.apache.spark.unsafe.types.UTF8String + + +abstract class StringRegexExpressionJoni extends BinaryExpression + with ImplicitCastInputTypes with NullIntolerant with Predicate { + + def escape(v: Array[Byte]): Array[Byte] + def matches(regex: Regex, str: Array[Byte]): Boolean + + override def dataType: DataType = BooleanType + override def inputTypes: Seq[DataType] = Seq(StringType, StringType) + + // try cache foldable pattern + private lazy val cache: Regex = right match { + case p: Expression if p.foldable => + compile(p.eval().asInstanceOf[UTF8String].getBytes) + case _ => null + } + + protected def compile(pattern: Array[Byte]): Regex = if (pattern == null) { + null + } else { + // Let it raise exception if couldn't compile the regex string + val escapedPattern = escape(pattern) + new Regex(escapedPattern, 0, escapedPattern.length, + Option.NONE, UTF8Encoding.INSTANCE, Syntax.Java) + } + + protected def pattern(pattern: Array[Byte]) = if (cache == null) compile(pattern) else cache + + protected override def nullSafeEval(input1: Any, input2: Any): Any = { + val regex = pattern(input2.asInstanceOf[UTF8String].getBytes) + if(regex == null) { + null + } else { + matches(regex, input1.asInstanceOf[UTF8String].getBytes) + } + } + + override def sql: String = s"${left.sql} ${prettyName.toUpperCase(Locale.ROOT)} ${right.sql}" +} + +// scalastyle:off line.contains.tab +/** + * Simple RegEx pattern matching function + */ +@ExpressionDescription( + usage = "str _FUNC_ pattern[ ESCAPE escape] - Returns true if str matches `pattern` with " + + "`escape`, null if any arguments are null, false otherwise.", + arguments = """ + Arguments: + * str - a string expression + * pattern - a string expression. The pattern is a string which is matched literally, with + exception to the following special symbols: + exception to the following special symbols:<br><br> + _ matches any one character in the input (similar to . in posix regular expressions) + % matches zero or more characters in the input (similar to .* in posix regular + expressions) + expressions)<br><br> + Since Spark 2.0, string literals are unescaped in our SQL parser. For example, in order + to match "\abc", the pattern should be "\\abc". + When SQL config 'spark.sql.parser.escapedStringLiterals' is enabled, it fallbacks + to Spark 1.6 behavior regarding string literal parsing. For example, if the config is + enabled, the pattern to match "\abc" should be "\abc". + * escape - an character added since Spark 3.0. The default escape character is the '\'. + If an escape character precedes a special symbol or another escape character, the + following character is matched literally. It is invalid to escape any other character. + """, + examples = """ + Examples: + > SELECT _FUNC_('Spark', '_park'); + true + > SET spark.sql.parser.escapedStringLiterals=true; + spark.sql.parser.escapedStringLiterals true + > SELECT '%SystemDrive%\Users\John' _FUNC_ '\%SystemDrive\%\\Users%'; + true + > SET spark.sql.parser.escapedStringLiterals=false; + spark.sql.parser.escapedStringLiterals false + > SELECT '%SystemDrive%\\Users\\John' _FUNC_ '\%SystemDrive\%\\\\Users%'; + true + > SELECT '%SystemDrive%/Users/John' _FUNC_ '/%SystemDrive/%//Users%' ESCAPE '/'; + true + """, + note = """ + Use RLIKE to match with standard regular expressions. + """, + since = "1.0.0") +// scalastyle:on line.contains.tab +case class LikeJoni(left: Expression, right: Expression, escapeChar: Char) + extends StringRegexExpressionJoni { + + def this(left: Expression, right: Expression) = this(left, right, '\\') + + override def escape(v: Array[Byte]): Array[Byte] = StringUtils.escapeLikeJoniRegex(v, escapeChar) + + override def matches(regex: Regex, input: Array[Byte]): Boolean = { + regex.matcher(input).`match`(0, input.length, Option.DEFAULT) == input.size + } + + final override val nodePatterns: Seq[TreePattern] = Seq(LIKE_FAMLIY) + + override def toString: String = escapeChar match { + case '\\' => s"$left LIKEJoni $right" + case c => s"$left LIKEJoni $right ESCAPE '$c'" + } + + override protected def doGenCode(ctx: CodegenContext, ev: ExprCode): ExprCode = { + val regexClass = classOf[Regex].getName + val optionClass = classOf[Option].getName + val encodingClass = classOf[UTF8Encoding].getName + val syntaxClass = classOf[Syntax].getName + val escapeFunc = StringUtils.getClass.getName.stripSuffix("$") + ".escapeLikeJoniRegex" + val regex = ctx.freshName("regex") + + if (right.foldable) { + val rVal = right.eval() + if (rVal != null) { + val tmp = + StringEscapeUtils.escapeJava( + new String(escape(rVal.asInstanceOf[UTF8String].getBytes), "utf-8")) + val pattern = ctx.addMutableState(regexClass, regex, + v => s""" + byte[] pattern = UTF8String.fromString("${tmp}").getBytes(); + $v = new ${regexClass}(pattern, 0, pattern.length, ${optionClass}.NONE, + ${encodingClass}.INSTANCE, ${syntaxClass}.Java); + """.stripMargin) + + // We don't use nullSafeCodeGen here because we don't want to re-evaluate right again. + val eval = left.genCode(ctx) + ev.copy(code = code""" + ${eval.code} + boolean ${ev.isNull} = ${eval.isNull}; + ${CodeGenerator.javaType(dataType)} ${ev.value} = ${CodeGenerator.defaultValue(dataType)}; + if (!${ev.isNull}) { + byte[] input = ${eval.value}.getBytes(); + ${ev.value} = + ${pattern}.matcher(input) + .match(0, input.length, ${optionClass}.DEFAULT) == input.length; + } + """) + } else { + ev.copy(code = code""" + boolean ${ev.isNull} = true; + ${CodeGenerator.javaType(dataType)} ${ev.value} = ${CodeGenerator.defaultValue(dataType)}; + """) + } + } else { + // val pattern = ctx.freshName("pattern") + // val rightStr = ctx.freshName("rightStr") + // We need to escape the escapeChar to make sure the generated code is valid. + // Otherwise we'll hit org.codehaus.commons.compiler.CompileException. + val escapedEscapeChar = StringEscapeUtils.escapeJava(escapeChar.toString) + nullSafeCodeGen(ctx, ev, (eval1, eval2) => { + s""" + byte[] pattern = $escapeFunc(${eval2}.getBytes(), '${escapedEscapeChar}'); + ${regexClass} $regex = new ${regexClass}(pattern, 0, pattern.length, ${optionClass}.NONE, + ${encodingClass}.INSTANCE, ${syntaxClass}.Java); + byte[] input = ${eval1}.getBytes(); + ${ev.value} = + $regex.matcher(input).match(0, input.length, ${optionClass}.DEFAULT) == input.length; + """ + }) + } + } + + override protected def withNewChildrenInternal( + newLeft: Expression, + newRight: Expression): LikeJoni = + copy(left = newLeft, right = newRight) +} + +sealed abstract class MultiLikeJoniBase + extends UnaryExpression with ImplicitCastInputTypes with NullIntolerant with Predicate { + + protected def patterns: Seq[UTF8String] + + protected def isNotSpecified: Boolean + + override def inputTypes: Seq[DataType] = StringType :: Nil + + override def dataType: DataType = BooleanType + + override def nullable: Boolean = true + + final override val nodePatterns: Seq[TreePattern] = Seq(LIKE_FAMLIY) + + protected lazy val hasNull: Boolean = patterns.contains(null) + + protected lazy val cache: Seq[Regex] = patterns.filterNot(_ == null) + .map(s => { + val escapedPattern = StringUtils.escapeLikeJoniRegex(s.getBytes, '\\') + new Regex(escapedPattern, 0, escapedPattern.length, + Option.NONE, UTF8Encoding.INSTANCE, Syntax.Java) + }) + + protected lazy val matchFunc = if (isNotSpecified) { + (p: Regex, inputValue: Array[Byte]) => + p.matcher(inputValue).`match`(0, inputValue.length, Option.DEFAULT) != inputValue.length + } else { + (p: Regex, inputValue: Array[Byte]) => + p.matcher(inputValue).`match`(0, inputValue.length, Option.DEFAULT) == inputValue.length + } + + protected def matches(exprValue: Array[Byte]): Any + + override def eval(input: InternalRow): Any = { + val exprValue = child.eval(input) + if (exprValue == null) { + null + } else { + matches(exprValue.toString.getBytes()) + } + } +} + +/** + * Optimized version of LIKE ALL, when all pattern values are literal. + */ +sealed abstract class LikeAllJoniBase extends MultiLikeJoniBase { + + override def matches(exprValue: Array[Byte]): Any = { + if (cache.forall(matchFunc(_, exprValue))) { + if (hasNull) null else true + } else { + false + } + } + + override def doGenCode(ctx: CodegenContext, ev: ExprCode): ExprCode = { + val eval = child.genCode(ctx) + val patternClass = classOf[Regex].getName + val optionClass = classOf[Option].getName + val javaDataType = CodeGenerator.javaType(child.dataType) + val pattern = ctx.freshName("pattern") + val valueArg = ctx.freshName("valueArg") + val patternCache = ctx.addReferenceObj("patternCache", cache.asJava) + + val checkNotMatchCode = if (isNotSpecified) { + s"$pattern.matcher($valueArg).match(0, ${valueArg}.length, ${optionClass}.DEFAULT)" + + s" == ${valueArg}.length" + } else { + s"$pattern.matcher($valueArg).match(0, ${valueArg}.length, ${optionClass}.DEFAULT)" + + s" != ${valueArg}.length" + } + + ev.copy(code = + code""" + |${eval.code} + |boolean ${ev.isNull} = false; + |boolean ${ev.value} = true; + |if (${eval.isNull}) { + | ${ev.isNull} = true; + |} else { + | byte[] $valueArg = ${eval.value}.getBytes(); + | for ($patternClass $pattern: $patternCache) { + | if ($checkNotMatchCode) { + | ${ev.value} = false; + | break; + | } + | } + | if (${ev.value} && $hasNull) ${ev.isNull} = true; + |} + """.stripMargin) + } +} + +case class LikeAllJoni(child: Expression, patterns: Seq[UTF8String]) extends LikeAllJoniBase { + override def isNotSpecified: Boolean = false + override protected def withNewChildInternal(newChild: Expression): LikeAllJoni = + copy(child = newChild) +} + +case class NotLikeAllJoni(child: Expression, patterns: Seq[UTF8String]) extends LikeAllJoniBase { + override def isNotSpecified: Boolean = true + override protected def withNewChildInternal(newChild: Expression): NotLikeAllJoni = + copy(child = newChild) +} + +/** + * Optimized version of LIKE ANY, when all pattern values are literal. + */ +sealed abstract class LikeAnyJoniBase extends MultiLikeJoniBase { + + override def matches(exprValue: Array[Byte]): Any = { + if (cache.exists(matchFunc(_, exprValue))) { + true + } else { + if (hasNull) null else false + } + } + + override def doGenCode(ctx: CodegenContext, ev: ExprCode): ExprCode = { + val eval = child.genCode(ctx) + val patternClass = classOf[Regex].getName + val optionClass = classOf[Option].getName + val javaDataType = CodeGenerator.javaType(child.dataType) + val pattern = ctx.freshName("pattern") + val valueArg = ctx.freshName("valueArg") + val patternCache = ctx.addReferenceObj("patternCache", cache.asJava) + + val checkMatchCode = if (isNotSpecified) { + s"$pattern.matcher($valueArg).match(0, ${valueArg}.length, ${optionClass}.DEFAULT)" + + s" != ${valueArg}.length" + } else { + s"$pattern.matcher($valueArg).match(0, ${valueArg}.length, ${optionClass}.DEFAULT)" + + s" == ${valueArg}.length" + } + + ev.copy(code = + code""" + |${eval.code} + |boolean ${ev.isNull} = false; + |boolean ${ev.value} = false; + |if (${eval.isNull}) { + | ${ev.isNull} = true; + |} else { + | byte[] $valueArg = ${eval.value}.getBytes(); + | for ($patternClass $pattern: $patternCache) { + | if ($checkMatchCode) { + | ${ev.value} = true; + | break; + | } + | } + | if (!${ev.value} && $hasNull) ${ev.isNull} = true; + |} + """.stripMargin) + } +} + +case class LikeAnyJoni(child: Expression, patterns: Seq[UTF8String]) extends LikeAnyJoniBase { + override def isNotSpecified: Boolean = false + override protected def withNewChildInternal(newChild: Expression): LikeAnyJoni = + copy(child = newChild) +} + +case class NotLikeAnyJoni(child: Expression, patterns: Seq[UTF8String]) extends LikeAnyJoniBase { + override def isNotSpecified: Boolean = true + override protected def withNewChildInternal(newChild: Expression): NotLikeAnyJoni = + copy(child = newChild) +} + + +// scalastyle:off line.contains.tab +@ExpressionDescription( + usage = "str _FUNC_ regexp - Returns true if `str` matches `regexp`, or false otherwise.", + arguments = """ + Arguments: + * str - a string expression + * regexp - a string expression. The regex string should be a Java regular expression. + + Since Spark 2.0, string literals (including regex patterns) are unescaped in our SQL + parser. For example, to match "\abc", a regular expression for `regexp` can be + "^\\abc$". + + There is a SQL config 'spark.sql.parser.escapedStringLiterals' that can be used to + fallback to the Spark 1.6 behavior regarding string literal parsing. For example, + if the config is enabled, the `regexp` that can match "\abc" is "^\abc$". + """, + examples = """ + Examples: + > SET spark.sql.parser.escapedStringLiterals=true; + spark.sql.parser.escapedStringLiterals true + > SELECT '%SystemDrive%\Users\John' _FUNC_ '%SystemDrive%\\Users.*'; + true + > SET spark.sql.parser.escapedStringLiterals=false; + spark.sql.parser.escapedStringLiterals false + > SELECT '%SystemDrive%\\Users\\John' _FUNC_ '%SystemDrive%\\\\Users.*'; + true + """, + note = """ + Use LIKE to match with simple string pattern. + """, + since = "1.0.0") +// scalastyle:on line.contains.tab +case class RLikeJoni(left: Expression, right: Expression) extends StringRegexExpressionJoni { + + override def escape(v: Array[Byte]): Array[Byte] = v + override def matches(regex: Regex, input: Array[Byte]): Boolean = { + regex.matcher(input).search(0, input.length, Option.DEFAULT) > -1 + } + override def toString: String = s"$left RLIKE_JONI $right" + + override protected def doGenCode(ctx: CodegenContext, ev: ExprCode): ExprCode = { + val regexClass = classOf[Regex].getName + val optionClass = classOf[Option].getName + val encodingClass = classOf[UTF8Encoding].getName + val syntaxClass = classOf[Syntax].getName + val regex = ctx.freshName("regex") + + if (right.foldable) { + val rVal = right.eval() + if (rVal != null) { + val tmp = + StringEscapeUtils.escapeJava(rVal.asInstanceOf[UTF8String].toString()) + val pattern = ctx.addMutableState(regexClass, regex, + v => s""" + byte[] pattern = UTF8String.fromString("${tmp}").getBytes(); Review Comment: fix this issue -- This is an automated message from the Apache Git Service. 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