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Fastpath.addFunctions
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How to use
addFunctions
method
in
org.postgresql.fastpath.Fastpath

Best Java code snippets using org.postgresql.fastpath.Fastpath.addFunctions (Showing top 4 results out of 315)

origin: org.postgresql/postgresql

fp.addFunctions(res);
res.close();
stmt.close();
origin: postgresql/postgresql

  throw new PSQLException(GT.tr("Failed to initialize LargeObject API"), PSQLState.SYSTEM_ERROR);
fp.addFunctions(res);
res.close();
origin: org.ancoron.postgresql/org.postgresql

  throw new PSQLException(GT.tr("Failed to initialize LargeObject API"), PSQLState.SYSTEM_ERROR);
fp.addFunctions(res);
res.close();
origin: org.ancoron.postgresql/org.postgresql.osgi

  throw new PSQLException(GT.tr("Failed to initialize LargeObject API"), PSQLState.SYSTEM_ERROR);
fp.addFunctions(res);
res.close();
org.postgresql.fastpathFastpathaddFunctions

Javadoc

This takes a ResultSet containing two columns. Column 1 contains the function name, Column 2 the oid.

It reads the entire ResultSet, loading the values into the function table.

REMEMBER to close() the resultset after calling this!!

Implementation note about function name lookups:

PostgreSQL stores the function id's and their corresponding names in the pg_proc table. To speed things up locally, instead of querying each function from that table when required, a Hashtable is used. Also, only the function's required are entered into this table, keeping connection times as fast as possible.

The org.postgresql.largeobject.LargeObject class performs a query upon it's startup, and passes the returned ResultSet to the addFunctions() method here.

Once this has been done, the LargeObject api refers to the functions by name.

Dont think that manually converting them to the oid's will work. Ok, they will for now, but they can change during development (there was some discussion about this for V7.0), so this is implemented to prevent any unwarranted headaches in the future.

Popular methods of Fastpath

  • <init>
    Initialises the fastpath system
  • createOIDArg
    Creates a FastpathArg with an oid parameter. This is here instead of a constructor of FastpathArg be
  • fastpath
    Send a function call to the PostgreSQL backend by name. Note: the mapping for the procedure name to
  • getData
    This convenience method assumes that the return value is not an Integer
  • getID
    This returns the function id associated by its name.If addFunction() or addFunctions() have not been
  • getInteger
    This convenience method assumes that the return value is an Integer
  • getOID
    This convenience method assumes that the return value is an oid.
  • getLong
    This convenience method assumes that the return value is a long (bigint).

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