From 88be1f00a26a8b646774267eab662c640a246c1f Mon Sep 17 00:00:00 2001 From: Arnaud Simon Date: Mon, 6 Aug 2007 06:36:27 +0000 Subject: JMS message selector grammar git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@563043 13f79535-47bb-0310-9956-ffa450edef68 --- java/client/src/main/grammar/SelectorParser.jj | 592 +++++++++++++++++++++++++ 1 file changed, 592 insertions(+) create mode 100644 java/client/src/main/grammar/SelectorParser.jj (limited to 'java/client') diff --git a/java/client/src/main/grammar/SelectorParser.jj b/java/client/src/main/grammar/SelectorParser.jj new file mode 100644 index 0000000000..13efb5489b --- /dev/null +++ b/java/client/src/main/grammar/SelectorParser.jj @@ -0,0 +1,592 @@ +/* + * + * 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. + * + */ + + // + // Original File from r450141 of the Apache ActiveMQ project + // + +// ---------------------------------------------------------------------------- +// OPTIONS +// ---------------------------------------------------------------------------- +options { + STATIC = false; + UNICODE_INPUT = true; + + // some performance optimizations + OPTIMIZE_TOKEN_MANAGER = true; + ERROR_REPORTING = false; +} + +// ---------------------------------------------------------------------------- +// PARSER +// ---------------------------------------------------------------------------- + +PARSER_BEGIN(SelectorParser) +/* + * + * 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.qpid.nclient.jms.filter.selector; + +import java.io.StringReader; +import java.util.ArrayList; + +import org.apache.qpidity.QpidException; +import org.apache.qpid.nclient.jms.filter.ArithmeticExpression; +import org.apache.qpid.nclient.jms.filter.BooleanExpression; +import org.apache.qpid.nclient.jms.filter.ComparisonExpression; +import org.apache.qpid.nclient.jms.filter.ConstantExpression; +import org.apache.qpid.nclient.jms.filter.Expression; +import org.apache.qpid.nclient.jms.filter.LogicExpression; +import org.apache.qpid.nclient.jms.filter.PropertyExpression; +import org.apache.qpid.nclient.jms.filter.UnaryExpression; + +/** + * JMS Selector Parser generated by JavaCC + * + * Do not edit this .java file directly - it is autogenerated from SelectorParser.jj + */ +public class SelectorParser { + + public SelectorParser() { + this(new StringReader("")); + } + + public BooleanExpression parse(String sql) throws QpidException { + this.ReInit(new StringReader(sql)); + + try { + return this.JmsSelector(); + } + catch (Throwable e) { + throw new QpidException(sql,"filter error",e); + } + + } + + private BooleanExpression asBooleanExpression(Expression value) throws ParseException { + if (value instanceof BooleanExpression) { + return (BooleanExpression) value; + } + if (value instanceof PropertyExpression) { + return UnaryExpression.createBooleanCast( value ); + } + throw new ParseException("Expression will not result in a boolean value: " + value); + } + + +} + +PARSER_END(SelectorParser) + +// ---------------------------------------------------------------------------- +// Tokens +// ---------------------------------------------------------------------------- + +/* White Space */ +SPECIAL_TOKEN : +{ + " " | "\t" | "\n" | "\r" | "\f" +} + +/* Comments */ +SKIP: +{ + +} + +SKIP: +{ + +} + +/* Reserved Words */ +TOKEN [IGNORE_CASE] : +{ + < NOT : "NOT"> + | < AND : "AND"> + | < OR : "OR"> + | < BETWEEN : "BETWEEN"> + | < LIKE : "LIKE"> + | < ESCAPE : "ESCAPE"> + | < IN : "IN"> + | < IS : "IS"> + | < TRUE : "TRUE" > + | < FALSE : "FALSE" > + | < NULL : "NULL" > +} + +/* Literals */ +TOKEN [IGNORE_CASE] : +{ + + < DECIMAL_LITERAL: ["1"-"9"] (["0"-"9"])* (["l","L"])? > + | < HEX_LITERAL: "0" ["x","X"] (["0"-"9","a"-"f","A"-"F"])+ > + | < OCTAL_LITERAL: "0" (["0"-"7"])* > + | < FLOATING_POINT_LITERAL: + (["0"-"9"])+ "." (["0"-"9"])* ()? // matches: 5.5 or 5. or 5.5E10 or 5.E10 + | "." (["0"-"9"])+ ()? // matches: .5 or .5E10 + | (["0"-"9"])+ // matches: 5E10 + > + | < #EXPONENT: "E" (["+","-"])? (["0"-"9"])+ > + | < STRING_LITERAL: "'" ( ("''") | ~["'"] )* "'" > +} + +TOKEN [IGNORE_CASE] : +{ + < ID : ["a"-"z", "_", "$"] (["a"-"z","0"-"9","_", "$"])* > +} + +// ---------------------------------------------------------------------------- +// Grammer +// ---------------------------------------------------------------------------- +BooleanExpression JmsSelector() : +{ + Expression left=null; +} +{ + ( + left = orExpression() + ) + { + return asBooleanExpression(left); + } + +} + +Expression orExpression() : +{ + Expression left; + Expression right; +} +{ + ( + left = andExpression() + ( + right = andExpression() + { + left = LogicExpression.createOR(asBooleanExpression(left), asBooleanExpression(right)); + } + )* + ) + { + return left; + } + +} + + +Expression andExpression() : +{ + Expression left; + Expression right; +} +{ + ( + left = equalityExpression() + ( + right = equalityExpression() + { + left = LogicExpression.createAND(asBooleanExpression(left), asBooleanExpression(right)); + } + )* + ) + { + return left; + } +} + +Expression equalityExpression() : +{ + Expression left; + Expression right; +} +{ + ( + left = comparisonExpression() + ( + + "=" right = comparisonExpression() + { + left = ComparisonExpression.createEqual(left, right); + } + | + "<>" right = comparisonExpression() + { + left = ComparisonExpression.createNotEqual(left, right); + } + | + LOOKAHEAD(2) + + { + left = ComparisonExpression.createIsNull(left); + } + | + + { + left = ComparisonExpression.createIsNotNull(left); + } + )* + ) + { + return left; + } +} + +Expression comparisonExpression() : +{ + Expression left; + Expression right; + Expression low; + Expression high; + String t, u; + boolean not; + ArrayList list; +} +{ + ( + left = addExpression() + ( + + ">" right = addExpression() + { + left = ComparisonExpression.createGreaterThan(left, right); + } + | + ">=" right = addExpression() + { + left = ComparisonExpression.createGreaterThanEqual(left, right); + } + | + "<" right = addExpression() + { + left = ComparisonExpression.createLessThan(left, right); + } + | + "<=" right = addExpression() + { + left = ComparisonExpression.createLessThanEqual(left, right); + } + | + { + u=null; + } + t = stringLitteral() + [ u = stringLitteral() ] + { + left = ComparisonExpression.createLike(left, t, u); + } + | + LOOKAHEAD(2) + { + u=null; + } + t = stringLitteral() [ u = stringLitteral() ] + { + left = ComparisonExpression.createNotLike(left, t, u); + } + | + low = addExpression() high = addExpression() + { + left = ComparisonExpression.createBetween(left, low, high); + } + | + LOOKAHEAD(2) + low = addExpression() high = addExpression() + { + left = ComparisonExpression.createNotBetween(left, low, high); + } + | + + "(" + t = stringLitteral() + { + list = new ArrayList(); + list.add( t ); + } + ( + "," + t = stringLitteral() + { + list.add( t ); + } + + )* + ")" + { + left = ComparisonExpression.createInFilter(left, list); + } + | + LOOKAHEAD(2) + + "(" + t = stringLitteral() + { + list = new ArrayList(); + list.add( t ); + } + ( + "," + t = stringLitteral() + { + list.add( t ); + } + + )* + ")" + { + left = ComparisonExpression.createNotInFilter(left, list); + } + + )* + ) + { + return left; + } +} + +Expression addExpression() : +{ + Expression left; + Expression right; +} +{ + left = multExpr() + ( + LOOKAHEAD( ("+"|"-") multExpr()) + ( + "+" right = multExpr() + { + left = ArithmeticExpression.createPlus(left, right); + } + | + "-" right = multExpr() + { + left = ArithmeticExpression.createMinus(left, right); + } + ) + + )* + { + return left; + } +} + +Expression multExpr() : +{ + Expression left; + Expression right; +} +{ + left = unaryExpr() + ( + "*" right = unaryExpr() + { + left = ArithmeticExpression.createMultiply(left, right); + } + | + "/" right = unaryExpr() + { + left = ArithmeticExpression.createDivide(left, right); + } + | + "%" right = unaryExpr() + { + left = ArithmeticExpression.createMod(left, right); + } + + )* + { + return left; + } +} + + +Expression unaryExpr() : +{ + String s=null; + Expression left=null; +} +{ + ( + LOOKAHEAD( "+" unaryExpr() ) + "+" left=unaryExpr() + | + "-" left=unaryExpr() + { + left = UnaryExpression.createNegate(left); + } + | + left=unaryExpr() + { + left = UnaryExpression.createNOT( asBooleanExpression(left) ); + } + | + left = primaryExpr() + ) + { + return left; + } + +} + +Expression primaryExpr() : +{ + Expression left=null; +} +{ + ( + left = literal() + | + left = variable() + | + "(" left = orExpression() ")" + ) + { + return left; + } +} + + + +ConstantExpression literal() : +{ + Token t; + String s; + ConstantExpression left=null; +} +{ + ( + ( + s = stringLitteral() + { + left = new ConstantExpression(s); + } + ) + | + ( + t = + { + left = ConstantExpression.createFromDecimal(t.image); + } + ) + | + ( + t = + { + left = ConstantExpression.createFromHex(t.image); + } + ) + | + ( + t = + { + left = ConstantExpression.createFromOctal(t.image); + } + ) + | + ( + t = + { + left = ConstantExpression.createFloat(t.image); + } + ) + | + ( + + { + left = ConstantExpression.TRUE; + } + ) + | + ( + + { + left = ConstantExpression.FALSE; + } + ) + | + ( + + { + left = ConstantExpression.NULL; + } + ) + ) + { + return left; + } +} + +String stringLitteral() : +{ + Token t; + StringBuffer rc = new StringBuffer(); + boolean first=true; +} +{ + t = + { + // Decode the sting value. + String image = t.image; + for( int i=1; i < image.length()-1; i++ ) { + char c = image.charAt(i); + if( c == '\'' ) + i++; + rc.append(c); + } + return rc.toString(); + } +} + +PropertyExpression variable() : +{ + Token t; + PropertyExpression left=null; +} +{ + ( + t = + { + left = new PropertyExpression(t.image); + } + ) + { + return left; + } +} -- cgit v1.2.1