diff options
Diffstat (limited to 'qpid/java/broker/src/main/grammar/SelectorParser.jj')
| -rw-r--r-- | qpid/java/broker/src/main/grammar/SelectorParser.jj | 621 |
1 files changed, 621 insertions, 0 deletions
diff --git a/qpid/java/broker/src/main/grammar/SelectorParser.jj b/qpid/java/broker/src/main/grammar/SelectorParser.jj new file mode 100644 index 0000000000..c9e01cd01f --- /dev/null +++ b/qpid/java/broker/src/main/grammar/SelectorParser.jj @@ -0,0 +1,621 @@ +/*
+ *
+ * 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 <http://www.activemq.org/site/home.html>
+ //
+
+// ----------------------------------------------------------------------------
+// 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.server.filter.jms.selector;
+
+import java.io.StringReader;
+import java.util.ArrayList;
+
+import org.apache.qpid.AMQInvalidArgumentException;
+import org.apache.qpid.server.filter.ArithmeticExpression;
+import org.apache.qpid.server.filter.BooleanExpression;
+import org.apache.qpid.server.filter.ComparisonExpression;
+import org.apache.qpid.server.filter.ConstantExpression;
+import org.apache.qpid.server.filter.Expression;
+import org.apache.qpid.server.filter.LogicExpression;
+import org.apache.qpid.server.filter.PropertyExpression;
+import org.apache.qpid.server.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 AMQInvalidArgumentException {
+ this.ReInit(new StringReader(sql));
+
+ try {
+ return this.JmsSelector();
+ }
+ catch (Throwable e) {
+ throw (AMQInvalidArgumentException)new AMQInvalidArgumentException(sql,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:
+{
+ <LINE_COMMENT: "--" (~["\n","\r"])* ("\n"|"\r"|"\r\n") >
+}
+
+SKIP:
+{
+ <BLOCK_COMMENT: "/*" (~["*"])* "*" ("*" | (~["*","/"] (~["*"])* "*"))* "/">
+}
+
+/* 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" >
+ | < XPATH : "XPATH" >
+ | < XQUERY : "XQUERY" >
+}
+
+/* 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"])* (<EXPONENT>)? // matches: 5.5 or 5. or 5.5E10 or 5.E10
+ | "." (["0"-"9"])+ (<EXPONENT>)? // matches: .5 or .5E10
+ | (["0"-"9"])+ <EXPONENT> // matches: 5E10
+ >
+ | < #EXPONENT: "E" (["+","-"])? (["0"-"9"])+ >
+ | < STRING_LITERAL: "'" ( ("''") | ~["'"] )* "'" >
+}
+
+TOKEN [IGNORE_CASE] :
+{
+ < ID : ["a"-"z", "_", "$"] (["a"-"z","0"-"9","_", "$"])* >
+ | < QUOTED_ID : "\"" ( ("\"\"") | ~["\""] )* "\"" >
+}
+
+// ----------------------------------------------------------------------------
+// Grammer
+// ----------------------------------------------------------------------------
+BooleanExpression JmsSelector() :
+{
+ Expression left=null;
+}
+{
+ (
+ left = orExpression()
+ )
+ {
+ return asBooleanExpression(left);
+ }
+
+}
+
+Expression orExpression() :
+{
+ Expression left;
+ Expression right;
+}
+{
+ (
+ left = andExpression()
+ (
+ <OR> right = andExpression()
+ {
+ left = LogicExpression.createOR(asBooleanExpression(left), asBooleanExpression(right));
+ }
+ )*
+ )
+ {
+ return left;
+ }
+
+}
+
+
+Expression andExpression() :
+{
+ Expression left;
+ Expression right;
+}
+{
+ (
+ left = equalityExpression()
+ (
+ <AND> 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)
+ <IS> <NULL>
+ {
+ left = ComparisonExpression.createIsNull(left);
+ }
+ |
+ <IS> <NOT> <NULL>
+ {
+ 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;
+ }
+ <LIKE> t = stringLitteral()
+ [ <ESCAPE> u = stringLitteral() ]
+ {
+ left = ComparisonExpression.createLike(left, t, u);
+ }
+ |
+ LOOKAHEAD(2)
+ {
+ u=null;
+ }
+ <NOT> <LIKE> t = stringLitteral() [ <ESCAPE> u = stringLitteral() ]
+ {
+ left = ComparisonExpression.createNotLike(left, t, u);
+ }
+ |
+ <BETWEEN> low = addExpression() <AND> high = addExpression()
+ {
+ left = ComparisonExpression.createBetween(left, low, high);
+ }
+ |
+ LOOKAHEAD(2)
+ <NOT> <BETWEEN> low = addExpression() <AND> high = addExpression()
+ {
+ left = ComparisonExpression.createNotBetween(left, low, high);
+ }
+ |
+ <IN>
+ "("
+ t = stringLitteral()
+ {
+ list = new ArrayList();
+ list.add( t );
+ }
+ (
+ ","
+ t = stringLitteral()
+ {
+ list.add( t );
+ }
+
+ )*
+ ")"
+ {
+ left = ComparisonExpression.createInFilter(left, list);
+ }
+ |
+ LOOKAHEAD(2)
+ <NOT> <IN>
+ "("
+ 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);
+ }
+ |
+ <NOT> left=unaryExpr()
+ {
+ left = UnaryExpression.createNOT( asBooleanExpression(left) );
+ }
+ |
+ <XPATH> s=stringLitteral()
+ {
+ left = UnaryExpression.createXPath( s );
+ }
+ |
+ <XQUERY> s=stringLitteral()
+ {
+ left = UnaryExpression.createXQuery( s );
+ }
+ |
+ 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 = <DECIMAL_LITERAL>
+ {
+ left = ConstantExpression.createFromDecimal(t.image);
+ }
+ )
+ |
+ (
+ t = <HEX_LITERAL>
+ {
+ left = ConstantExpression.createFromHex(t.image);
+ }
+ )
+ |
+ (
+ t = <OCTAL_LITERAL>
+ {
+ left = ConstantExpression.createFromOctal(t.image);
+ }
+ )
+ |
+ (
+ t = <FLOATING_POINT_LITERAL>
+ {
+ left = ConstantExpression.createFloat(t.image);
+ }
+ )
+ |
+ (
+ <TRUE>
+ {
+ left = ConstantExpression.TRUE;
+ }
+ )
+ |
+ (
+ <FALSE>
+ {
+ left = ConstantExpression.FALSE;
+ }
+ )
+ |
+ (
+ <NULL>
+ {
+ left = ConstantExpression.NULL;
+ }
+ )
+ )
+ {
+ return left;
+ }
+}
+
+String stringLitteral() :
+{
+ Token t;
+ StringBuffer rc = new StringBuffer();
+ boolean first=true;
+}
+{
+ t = <STRING_LITERAL>
+ {
+ // 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;
+ StringBuffer rc = new StringBuffer();
+ PropertyExpression left=null;
+}
+{
+ (
+ t = <ID>
+ {
+ left = new PropertyExpression(t.image);
+ }
+ |
+ t = <QUOTED_ID>
+ {
+ // 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 new PropertyExpression(rc.toString());
+ }
+
+
+ )
+ {
+ return left;
+ }
+}
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