Revision 1 as of 2005-11-29 21:28:53
converted to 1.6 markup
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|Currently the nodes are created indirectly through a !NodeFactory, however [http://issues.apache.org/jira/browse/DERBY-673 DERBY-673] describes removing the factory.||Currently the nodes are created indirectly through a !NodeFactory, however [[http://issues.apache.org/jira/browse/DERBY-673|DERBY-673]] describes removing the factory.|
Derby SQL Parsing
The input to the parser is a Java string containing the text of the SQL statement. Since the statement is a Java String its character set is always Unicode.
The parser is generated by javacc and its source is in the file /trunk/java/engine/org/apache/derby/impl/sql/compile/sqlgrammar.jj
Parsing creates a tree of query nodes, each represented by an instance of a sub-class of org.apache.derby.impl.sql.compile.QueryTreeNode class. Each node represents a database operation.
Currently the nodes are created indirectly through a NodeFactory, however DERBY-673 describes removing the factory.
Onto the bind phase: LanguageBind