froehlich 01/11/29 05:05:32
Modified: apps/db/src/sql/javacc BasicSQLParser.jj
Log:
first successful compile of the sql parser, yippie ;-)
Revision Changes Path
1.2 +99 -17
jakarta-avalon-cornerstone/apps/db/src/sql/javacc/BasicSQLParser.jj
Index: BasicSQLParser.jj
===================================================================
RCS file:
/home/cvs/jakarta-avalon-cornerstone/apps/db/src/sql/javacc/BasicSQLParser.jj,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -r1.1 -r1.2
--- BasicSQLParser.jj 2001/11/28 15:25:37 1.1
+++ BasicSQLParser.jj 2001/11/29 13:05:32 1.2
@@ -9,17 +9,45 @@
PARSER_BEGIN(BasicSQLParser)
package org.apache.avalon.db.basic.parser;
-import org.apache.avalon.db.server.AbstractSQLParser;
+import org.apache.avalon.db.server.sql.AbstractSQLParser;
+import org.apache.avalon.db.server.sql.ParseException;
+import org.apache.avalon.db.server.sql.SimpleCharStream;
+import org.apache.avalon.db.server.sql.Token;
+import org.apache.avalon.db.server.sql.TokenMgrError;
+import org.apache.avalon.db.server.AbstractRequestHandler;
+import org.apache.avalon.db.server.stdhandlers.PingHandler;
+import org.apache.avalon.db.server.stdhandlers.CatalogHandler;
+import org.apache.avalon.db.server.stdhandlers.EstablishConnectionHandler;
+import org.apache.avalon.db.transport.Request;
+import org.apache.avalon.db.basic.handlers.BasicCloseResultSetHandler;
+import org.apache.avalon.db.actions.Action;
+import org.apache.avalon.db.actions.ActionException;
+import java.util.ArrayList;
+
/**
* Class BasicSQLParser
*
* @author Gerhard Froehlich <a href="mailto:[EMAIL PROTECTED]">[EMAIL
PROTECTED]</a>
*/
public class BasicSQLParser extends AbstractSQLParser {
+
+ protected void getCustomRequestHandlers(AbstractRequestHandler[]
handlers) {
+ }
+
+ public void initializeAction(Action action) throws ActionException {
+ action.setDatabasePersistor(mDatabasePersistor);
+ setupLogger(action);
+ action.initialize();
+ }
+
public static void main(String args[]) {
BasicSQLParser parser = new BasicSQLParser(System.in);
- parser.Test((String)args[0]);
+ try {
+ parser.Test((String)args[0]);
+ } catch(ParseException pe) {
+ pe.printStackTrace();
+ }
}
}
@@ -98,6 +126,12 @@
| <LIKE: "like" >
}
+TOKEN : { /* Indentifiers */
+ <IDENTIFIER: <LETTER> ( <LETTER> | <DIGIT> )* >
+ | <#LETTER: ["a"-"z", "A"-"Z", "_"] >
+ | <#DIGIT: ["0"-"9"]>
+}
+
/**
* Test Method for command line input
*/
@@ -109,12 +143,15 @@
) ";"
}
-void parseSQLString(String sql) :
-{ }
+String parseSQLString(String sql) :
{
+ String stm;
+}
+{
(
- Update(sql)
- | Select(sql)
+ stm = Select(sql)
+ | stm = Update(sql)
+ /*
| Rollback(sql)
| Insert(sql)
| Grant(sql)
@@ -122,28 +159,43 @@
| Delete(sql)
| Commit(sql)
| Alter(sql)
+ */
) ";"
+ { return stm; }
}
-void Select(String sql) :
-{ }
+String Select(String sql) :
+{
+ String stm;
+ Token token;
+ ArrayList columns = new ArrayList();
+}
+
{
<SELECT>
+ getColumns(columns)
+ token = <SELECT>
{
- //Implementation
+ stm = token.image;
}
-
<FROM>
- {
- //Implementation
- }
- //[ Where() ] //process where
+
+ [ Where() ] //process where
+ { return stm; }
}
-void Update(String sql) :
-{}
+String Update(String sql) :
{
- <EOF>
+ String stm;
+ Token token;
+}
+{
+ <UPDATE>
+ token = <UPDATE>
+ {
+ stm = token.image;
+ }
+ { return stm; }
}
void Rollback(String sql) :
@@ -186,5 +238,35 @@
{}
{
<EOF>
+}
+
+void Where() :
+{}
+{
+ <EOF>
+}
+
+void getColumns(ArrayList list) :
+{
+ String col;
+}
+{
+ col = getSingleColumn() { list.add(col); }
+}
+
+String getSingleColumn() :
+{
+ String col;
+ Token column;
+}
+
+{
+
+ column = <IDENTIFIER>
+ {
+ col = column.image;
+ System.out.println("column=" + col);
+ }
+ { return col; }
}
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