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Posted to commits@qpid.apache.org by ar...@apache.org on 2007/08/06 08:36:28 UTC
svn commit: r563043 - in
/incubator/qpid/trunk/qpid/java/client/src/main/grammar: ./ SelectorParser.jj
Author: arnaudsimon
Date: Sun Aug 5 23:36:27 2007
New Revision: 563043
URL: http://svn.apache.org/viewvc?view=rev&rev=563043
Log:
JMS message selector grammar
Added:
incubator/qpid/trunk/qpid/java/client/src/main/grammar/
incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj
Added: incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj
URL: http://svn.apache.org/viewvc/incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj?view=auto&rev=563043
==============================================================================
--- incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj (added)
+++ incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj Sun Aug 5 23:36:27 2007
@@ -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 <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.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:
+{
+ <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" >
+}
+
+/* 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", "_", "$"] (["a"-"z","0"-"9","_", "$"])* >
+}
+
+// ----------------------------------------------------------------------------
+// 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) );
+ }
+ |
+ 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;
+ PropertyExpression left=null;
+}
+{
+ (
+ t = <ID>
+ {
+ left = new PropertyExpression(t.image);
+ }
+ )
+ {
+ return left;
+ }
+}
Re: svn commit: r563043 - in /incubator/qpid/trunk/qpid/java/client/src/main/grammar: ./ SelectorParser.jj
Posted by Rajith Attapattu <ra...@gmail.com>.
On 8/6/07, Arnaud Simon <as...@redhat.com> wrote:
>
> This is done. I have also changed the 0.10 client package name to be
> consistent with the one used in common. So, I have moved
> org.apache.qpid.nclient to org.apache.qpidity.
> What do you think about this name? Should we keep it or change it?
This change broke the build big time.
I am renaming it to org.apache.qpidity.client.
We can change the qpidity part later on.
Rajith.
Re: svn commit: r563043 - in /incubator/qpid/trunk/qpid/java/client/src/main/grammar: ./ SelectorParser.jj
Posted by Rajith Attapattu <ra...@gmail.com>.
Yes and Apache would not be happy with that.
Usually it has to be org.apache.<projectname>.....
We can rename qpidity after we figure out a proper naming scheme for the new
work being done.
Rajith
On 8/6/07, Robert Godfrey <ro...@gmail.com> wrote:
>
> I think we'll want to have everything under a qpid package
> eventually... we
> may need different sub-packages to differentiate between 0-8 and 0-10
> code.
> Antyhing other than .qpid. would seem *odd* :-)
>
> -- Rob
>
> On 06/08/07, Rafael Schloming <ra...@redhat.com> wrote:
> >
> > Robert Greig wrote:
> > > On 06/08/07, Arnaud Simon <as...@redhat.com> wrote:
> > >> This is done. I have also changed the 0.10 client package name to be
> > >> consistent with the one used in common. So, I have moved
> > >> org.apache.qpid.nclient to org.apache.qpidity.
> > >> What do you think about this name? Should we keep it or change it? I
> > >> think that whatever name we go for, we should use it consistently
> > >> between common and client (and eventually broker).
> > >
> > > You mean the name "qpidity"? How did you arrive at it?
> >
> > I wanted a temporary package name to submit my code, so I just tacked
> > the first thing onto qpid that sounded vaguely like a word. As it turns
> > out "cupidity" is actually a real, but obscure, word that has a mildly
> > amusing meaning.
> >
> > --Rafael
> >
>
Re: svn commit: r563043 - in /incubator/qpid/trunk/qpid/java/client/src/main/grammar: ./ SelectorParser.jj
Posted by Robert Godfrey <ro...@gmail.com>.
I think we'll want to have everything under a qpid package eventually... we
may need different sub-packages to differentiate between 0-8 and 0-10 code.
Antyhing other than .qpid. would seem *odd* :-)
-- Rob
On 06/08/07, Rafael Schloming <ra...@redhat.com> wrote:
>
> Robert Greig wrote:
> > On 06/08/07, Arnaud Simon <as...@redhat.com> wrote:
> >> This is done. I have also changed the 0.10 client package name to be
> >> consistent with the one used in common. So, I have moved
> >> org.apache.qpid.nclient to org.apache.qpidity.
> >> What do you think about this name? Should we keep it or change it? I
> >> think that whatever name we go for, we should use it consistently
> >> between common and client (and eventually broker).
> >
> > You mean the name "qpidity"? How did you arrive at it?
>
> I wanted a temporary package name to submit my code, so I just tacked
> the first thing onto qpid that sounded vaguely like a word. As it turns
> out "cupidity" is actually a real, but obscure, word that has a mildly
> amusing meaning.
>
> --Rafael
>
Re: svn commit: r563043 - in /incubator/qpid/trunk/qpid/java/client/src/main/grammar:
./ SelectorParser.jj
Posted by Rafael Schloming <ra...@redhat.com>.
Robert Greig wrote:
> On 06/08/07, Arnaud Simon <as...@redhat.com> wrote:
>> This is done. I have also changed the 0.10 client package name to be
>> consistent with the one used in common. So, I have moved
>> org.apache.qpid.nclient to org.apache.qpidity.
>> What do you think about this name? Should we keep it or change it? I
>> think that whatever name we go for, we should use it consistently
>> between common and client (and eventually broker).
>
> You mean the name "qpidity"? How did you arrive at it?
I wanted a temporary package name to submit my code, so I just tacked
the first thing onto qpid that sounded vaguely like a word. As it turns
out "cupidity" is actually a real, but obscure, word that has a mildly
amusing meaning.
--Rafael
Re: svn commit: r563043 - in /incubator/qpid/trunk/qpid/java/client/src/main/grammar: ./ SelectorParser.jj
Posted by Robert Greig <ro...@gmail.com>.
On 06/08/07, Arnaud Simon <as...@redhat.com> wrote:
> This is done. I have also changed the 0.10 client package name to be
> consistent with the one used in common. So, I have moved
> org.apache.qpid.nclient to org.apache.qpidity.
> What do you think about this name? Should we keep it or change it? I
> think that whatever name we go for, we should use it consistently
> between common and client (and eventually broker).
You mean the name "qpidity"? How did you arrive at it?
RG
Re: svn commit: r563043 - in
/incubator/qpid/trunk/qpid/java/client/src/main/grammar: ./
SelectorParser.jj
Posted by Arnaud Simon <as...@redhat.com>.
This is done. I have also changed the 0.10 client package name to be
consistent with the one used in common. So, I have moved
org.apache.qpid.nclient to org.apache.qpidity.
What do you think about this name? Should we keep it or change it? I
think that whatever name we go for, we should use it consistently
between common and client (and eventually broker).
Arnaud
On Mon, 2007-08-06 at 13:41 +0100, Rupert Smith wrote:
> I think it would be better to move the selector code to common now. I
> never like to see cut and paste code, as there is always the
> 'certainty' ;) that the two copies will evolve separately, and be hard
> to merge back together again.
>
> On 06/08/07, Arnaud Simon <as...@redhat.com> wrote:
> On Mon, 2007-08-06 at 13:19 +0100, Robert Godfrey wrote:
> > Hi Arnaud,
> >
> > In the 0-10 Java Broker (whenever we start on that) I
> *definitely*
> > expect that we will be having server-side selectors.
> >
> > We are adding them client side so that we can have JMS
> compliance with
> > brokers which do not implement server side selectors ( e.g.
> our own C
> > ++ broker :-) ).
>
> Broker side message selection is certainly faster than client
> side. We
> will need to have a negotiation mechanism for finding out if
> the broker
> provides such a service though.
>
> > As to XPath and XQuery mesage routing... I think this is a
> separate
> > issue (and before we say "definitely" I think we should
> discuss on the
> > list), and is a matter of custom exchanges.
>
> I used "certainly" with the meaning of "surely = probably" and
> not
> "definitely" as I would not implement anything without a
> prior
> discussion. I should have used "probably", sorry for the
> confusion.
>
>
>
Re: svn commit: r563043 - in
/incubator/qpid/trunk/qpid/java/client/src/main/grammar: ./
SelectorParser.jj
Posted by Arnaud Simon <as...@redhat.com>.
I am moving it back into common. It'll "probably" :) be done by the end
of today.
On Mon, 2007-08-06 at 13:41 +0100, Rupert Smith wrote:
> I think it would be better to move the selector code to common now. I
> never like to see cut and paste code, as there is always the
> 'certainty' ;) that the two copies will evolve separately, and be hard
> to merge back together again.
>
> On 06/08/07, Arnaud Simon <as...@redhat.com> wrote:
> On Mon, 2007-08-06 at 13:19 +0100, Robert Godfrey wrote:
> > Hi Arnaud,
> >
> > In the 0-10 Java Broker (whenever we start on that) I
> *definitely*
> > expect that we will be having server-side selectors.
> >
> > We are adding them client side so that we can have JMS
> compliance with
> > brokers which do not implement server side selectors ( e.g.
> our own C
> > ++ broker :-) ).
>
> Broker side message selection is certainly faster than client
> side. We
> will need to have a negotiation mechanism for finding out if
> the broker
> provides such a service though.
>
> > As to XPath and XQuery mesage routing... I think this is a
> separate
> > issue (and before we say "definitely" I think we should
> discuss on the
> > list), and is a matter of custom exchanges.
>
> I used "certainly" with the meaning of "surely = probably" and
> not
> "definitely" as I would not implement anything without a
> prior
> discussion. I should have used "probably", sorry for the
> confusion.
>
>
>
Re: svn commit: r563043 - in /incubator/qpid/trunk/qpid/java/client/src/main/grammar: ./ SelectorParser.jj
Posted by Rupert Smith <ru...@googlemail.com>.
I think it would be better to move the selector code to common now. I never
like to see cut and paste code, as there is always the 'certainty' ;) that
the two copies will evolve separately, and be hard to merge back together
again.
On 06/08/07, Arnaud Simon <as...@redhat.com> wrote:
>
> On Mon, 2007-08-06 at 13:19 +0100, Robert Godfrey wrote:
> > Hi Arnaud,
> >
> > In the 0-10 Java Broker (whenever we start on that) I *definitely*
> > expect that we will be having server-side selectors.
> >
> > We are adding them client side so that we can have JMS compliance with
> > brokers which do not implement server side selectors ( e.g. our own C
> > ++ broker :-) ).
>
> Broker side message selection is certainly faster than client side. We
> will need to have a negotiation mechanism for finding out if the broker
> provides such a service though.
>
> > As to XPath and XQuery mesage routing... I think this is a separate
> > issue (and before we say "definitely" I think we should discuss on the
> > list), and is a matter of custom exchanges.
>
> I used "certainly" with the meaning of "surely = probably" and not
> "definitely" as I would not implement anything without a prior
> discussion. I should have used "probably", sorry for the confusion.
>
>
>
Re: svn commit: r563043 - in
/incubator/qpid/trunk/qpid/java/client/src/main/grammar: ./
SelectorParser.jj
Posted by Arnaud Simon <as...@redhat.com>.
On Mon, 2007-08-06 at 13:19 +0100, Robert Godfrey wrote:
> Hi Arnaud,
>
> In the 0-10 Java Broker (whenever we start on that) I *definitely*
> expect that we will be having server-side selectors.
>
> We are adding them client side so that we can have JMS compliance with
> brokers which do not implement server side selectors ( e.g. our own C
> ++ broker :-) ).
Broker side message selection is certainly faster than client side. We
will need to have a negotiation mechanism for finding out if the broker
provides such a service though.
> As to XPath and XQuery mesage routing... I think this is a separate
> issue (and before we say "definitely" I think we should discuss on the
> list), and is a matter of custom exchanges.
I used "certainly" with the meaning of "surely = probably" and not
"definitely" as I would not implement anything without a prior
discussion. I should have used "probably", sorry for the confusion.
Re: svn commit: r563043 - in /incubator/qpid/trunk/qpid/java/client/src/main/grammar: ./ SelectorParser.jj
Posted by Robert Godfrey <ro...@gmail.com>.
Hi Arnaud,
In the 0-10 Java Broker (whenever we start on that) I *definitely* expect
that we will be having server-side selectors.
We are adding them client side so that we can have JMS compliance with
brokers which do not implement server side selectors (e.g. our own C++
broker :-) ).
As to XPath and XQuery mesage routing... I think this is a separate issue
(and before we say "definitely" I think we should discuss on the list), and
is a matter of custom exchanges. On that note I'll be putting a small patch
into trunk soo which will allow custom exchange implementations to be
specified in the config files...
Cheers,
Rob
On 06/08/07, Arnaud Simon <as...@redhat.com> wrote:
>
> Hi,
>
> Message selection will only happen at the client side. The reason is
> that message selector is not supported by AMQP brokers. So, I don't
> think that the 0.10 version of the broker should support message
> selection. It will certainly support Xpath and Xquery message routing
> though.
> What I would suggest is that we keep the message selection code in
> client for now. When implementing the 0.10 version of the broker we may
> then decide to reuse this code and then move it into common.
> What do you think?
>
> Arnaud
>
>
> On Mon, 2007-08-06 at 11:40 +0100, Martin Ritchie wrote:
> > Arnaud, If we are going to include the JMS Selector code in the client
> > as well as the broker would it not make sense to move it to common?
> >
> > On 06/08/07, arnaudsimon@apache.org <ar...@apache.org> wrote:
> > > Author: arnaudsimon
> > > Date: Sun Aug 5 23:36:27 2007
> > > New Revision: 563043
> > >
> > > URL: http://svn.apache.org/viewvc?view=rev&rev=563043
> > > Log:
> > > JMS message selector grammar
> > >
> > > Added:
> > > incubator/qpid/trunk/qpid/java/client/src/main/grammar/
> >
> > incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj
> > >
> > > Added:
> incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj
> > > URL:
> http://svn.apache.org/viewvc/incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj?view=auto&rev=563043
> > >
> ==============================================================================
> > > ---
> incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj
> (added)
> > > +++
> incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj Sun
> Aug 5 23:36:27 2007
> > > @@ -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 <
> 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.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:
> > > +{
> > > + <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" >
> > > +}
> > > +
> > > +/* 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: 5.5or 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", "_", "$"] (["a"-"z","0"-"9","_", "$"])* >
> > > +}
> > > +
> > > +//
> ----------------------------------------------------------------------------
> > > +// 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) );
> > > + }
> > > + |
> > > + 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;
> > > + PropertyExpression left=null;
> > > +}
> > > +{
> > > + (
> > > + t = <ID>
> > > + {
> > > + left = new PropertyExpression(t.image);
> > > + }
> > > + )
> > > + {
> > > + return left;
> > > + }
> > > +}
> > >
> > >
> > >
> >
> >
>
>
Re: svn commit: r563043 - in
/incubator/qpid/trunk/qpid/java/client/src/main/grammar: ./
SelectorParser.jj
Posted by Arnaud Simon <as...@redhat.com>.
Hi,
Message selection will only happen at the client side. The reason is
that message selector is not supported by AMQP brokers. So, I don't
think that the 0.10 version of the broker should support message
selection. It will certainly support Xpath and Xquery message routing
though.
What I would suggest is that we keep the message selection code in
client for now. When implementing the 0.10 version of the broker we may
then decide to reuse this code and then move it into common.
What do you think?
Arnaud
On Mon, 2007-08-06 at 11:40 +0100, Martin Ritchie wrote:
> Arnaud, If we are going to include the JMS Selector code in the client
> as well as the broker would it not make sense to move it to common?
>
> On 06/08/07, arnaudsimon@apache.org <ar...@apache.org> wrote:
> > Author: arnaudsimon
> > Date: Sun Aug 5 23:36:27 2007
> > New Revision: 563043
> >
> > URL: http://svn.apache.org/viewvc?view=rev&rev=563043
> > Log:
> > JMS message selector grammar
> >
> > Added:
> > incubator/qpid/trunk/qpid/java/client/src/main/grammar/
> > incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj
> >
> > Added: incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj
> > URL: http://svn.apache.org/viewvc/incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj?view=auto&rev=563043
> > ==============================================================================
> > --- incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj (added)
> > +++ incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj Sun Aug 5 23:36:27 2007
> > @@ -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 <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.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:
> > +{
> > + <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" >
> > +}
> > +
> > +/* 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", "_", "$"] (["a"-"z","0"-"9","_", "$"])* >
> > +}
> > +
> > +// ----------------------------------------------------------------------------
> > +// 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) );
> > + }
> > + |
> > + 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;
> > + PropertyExpression left=null;
> > +}
> > +{
> > + (
> > + t = <ID>
> > + {
> > + left = new PropertyExpression(t.image);
> > + }
> > + )
> > + {
> > + return left;
> > + }
> > +}
> >
> >
> >
>
>
Re: svn commit: r563043 - in /incubator/qpid/trunk/qpid/java/client/src/main/grammar: ./ SelectorParser.jj
Posted by Martin Ritchie <ri...@apache.org>.
Arnaud, If we are going to include the JMS Selector code in the client
as well as the broker would it not make sense to move it to common?
On 06/08/07, arnaudsimon@apache.org <ar...@apache.org> wrote:
> Author: arnaudsimon
> Date: Sun Aug 5 23:36:27 2007
> New Revision: 563043
>
> URL: http://svn.apache.org/viewvc?view=rev&rev=563043
> Log:
> JMS message selector grammar
>
> Added:
> incubator/qpid/trunk/qpid/java/client/src/main/grammar/
> incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj
>
> Added: incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj
> URL: http://svn.apache.org/viewvc/incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj?view=auto&rev=563043
> ==============================================================================
> --- incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj (added)
> +++ incubator/qpid/trunk/qpid/java/client/src/main/grammar/SelectorParser.jj Sun Aug 5 23:36:27 2007
> @@ -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 <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.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:
> +{
> + <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" >
> +}
> +
> +/* 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", "_", "$"] (["a"-"z","0"-"9","_", "$"])* >
> +}
> +
> +// ----------------------------------------------------------------------------
> +// 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) );
> + }
> + |
> + 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;
> + PropertyExpression left=null;
> +}
> +{
> + (
> + t = <ID>
> + {
> + left = new PropertyExpression(t.image);
> + }
> + )
> + {
> + return left;
> + }
> +}
>
>
>
--
Martin Ritchie