Hi there,
we are working on a small project where we need to analyze an SQL
statement that can be of any kind: very simple, with inner selects,
complex join etc.
We figured it inappropriate to start to write our own parser when there
are other projects, like derby, out there that can do it much better
than we would possibly do ... so this was our idea:
Can we use derby to create an instance of Parser
(org.apache.derby.iapi.sql.compile.Parser.class) and let our SQL
statement be parsed by calling the parse() method on this instance? What
we want to have is a syntax tree of the statement that allows us to see
which tables and which fields are accessed / included in the statement
(including any possibly done "renames" รก la SELECT street AS "ADDRESS"
FROM USER_DATA ).
The problem is, that we are stuck ... we spent several days now to try
to find the proper way to create an instance of the Parser. Is it
possible at all without having to set up a running derby system?
Is the Monitor class the right entry point? How can we create a
CompilerContext so that a Parser instance can be created?
This sure is off-topic but we don't see any way through all this. Can
you help us?
Thanks in advance
Christian
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