Android & PostgreSQL (application/pdf - 311.5 KB) - PGCon

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NOTIFY: Send a notification Send a notification to the channel virtual: Statement stmt = conn . c r e a t e S t a t e m e n t ( ) ; stmt . e x e c u t e ( ”NOTIFY v i r t u a l ; ” ) ; stmt . c l o s e ( ) ; Note: Starting with PostgreSQL 9.0, there is the stored function pg notify(text, text) that can be used. markwkm (PGCon2011) Android & PostgreSQL 20 May 2011 24 / 37
Server Prepared Statements JDBC allows a threshold to be set before the server prepared statement is used. Recommended to use with PostgreSQL 7.4 and later: http://jdbc.postgresql.org/documentation/81/server-prepare.html PreparedStatement pstmt = conn . p r e p a r e S t a t e m e n t ( ”SELECT ? ; ” ) ; // Cast the PreparedStatement to the PostgreSQL s p e c i f i c // PGStatement . org . p o s t g r e s q l . PGStatement pgstmt = ( org . p o s t g r e s q l . PGStatement ) pstmt ; // Use p r e p a r e d s t a t e m e n t on the 2nd e x e c u t i o n onward . pgstmt . s e t P r e p a r e T h r e s h o l d ( 2 ) ; pstmt . s e t I n t ( 1 , 4 2 ) ; R e s u l t S e t r s = pstmt . executeQuery ( ) ; pstmt . c l o s e ( ) ; markwkm (PGCon2011) Android & PostgreSQL 20 May 2011 25 / 37
Page 1 and 2: Android & PostgreSQL Mark Wong mark
Page 3 and 4: Overview Two topics, mostly the lat
Page 5 and 6: Development Environment A few detai
Page 7 and 8: Using the PostgreSQL JDBC Driver To
Page 9 and 10: PostgreSQL JDBC Code Examples • S
Page 11 and 12: Execute a Query Select the name of
Page 13 and 14: Execute a Query with a Bind Value B
Page 15 and 16: Create, Modify, or Drop Database Ob
Page 17 and 18: Example for Calling Stored Function
Page 19 and 20: Starting listening to a channel Reg
Page 21 and 22: LISTEN: Handle notifications A key
Page 23: Stop listening to a channel Stop li
Page 27 and 28: INSERT a circle PGpoint c e n t e r
Page 29 and 30: JDBC Escapes A special escape synta
Page 31 and 32: Connection pools Long examples for
Page 33 and 34: Android Example Programs For refere
Page 35 and 36: __ __ / \~~~/ \ . o O ( Thank you!
Page 37: License This work is licensed under

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