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Commitded46bd

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author
Peter Mount
committed
Implement UpdateCount
1 parent50eb8b7 commitded46bd

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4 files changed

+25
-4
lines changed

4 files changed

+25
-4
lines changed

‎src/interfaces/jdbc/CHANGELOG

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Original file line numberDiff line numberDiff line change
@@ -1,3 +1,10 @@
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Sun Apr 11 17:00:00 BST 1999
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- getUpdateCount() now returns the actual update count (before it
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simply returned 1 for everything).
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- added some updates to example.basic so it would test the new update
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count code.
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- corrected typo in a comment in Statement.java
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Mon Jan 25 19:45:00 GMT 1999
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- created subfolders example/corba and example/corba/idl to hold the
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new example showing how to hook CORBA and PostgreSQL via JDBC

‎src/interfaces/jdbc/example/basic.java

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Original file line numberDiff line numberDiff line change
@@ -77,6 +77,10 @@ public void doexample() throws SQLException
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st.executeUpdate("insert into basic values (2,1)");
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st.executeUpdate("insert into basic values (3,1)");
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// Now change the value of b from 1 to 8
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st.executeUpdate("update basic set b=8");
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System.out.println("Updated "+st.getUpdateCount()+" rows");
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// For large inserts, a PreparedStatement is more efficient, because it
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// supports the idea of precompiling the SQL statement, and to store
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// directly, a Java object into any column. PostgreSQL doesnt support

‎src/interfaces/jdbc/postgresql/Connection.java

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Original file line numberDiff line numberDiff line change
@@ -10,7 +10,7 @@
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importpostgresql.util.*;
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/**
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* $Id: Connection.java,v 1.14 1999/01/17 04:51:50 momjian Exp $
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* $Id: Connection.java,v 1.15 1999/04/11 18:03:00 peter Exp $
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*
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* This abstract class is used by postgresql.Driver to open either the JDBC1 or
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* JDBC2 versions of the Connection class.
@@ -321,6 +321,7 @@ public java.sql.ResultSet ExecSQL(String sql) throws SQLException
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intfqp =0;
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booleanhfr =false;
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Stringrecv_status =null,msg;
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intupdate_count =1;
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SQLExceptionfinal_error =null;
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if (sql.length() >8192)
@@ -358,6 +359,15 @@ public java.sql.ResultSet ExecSQL(String sql) throws SQLException
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break;
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case'C':// Command Status
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recv_status =pg_stream.ReceiveString(8192);
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// Now handle the update count correctly.
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if(recv_status.startsWith("INSERT") ||recv_status.startsWith("UPDATE")) {
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try {
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update_count =Integer.parseInt(recv_status.substring(1+recv_status.lastIndexOf(' ')));
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}catch(NumberFormatExceptionnfe) {
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thrownewSQLException("Unable to fathom update count\""+recv_status+"\"");
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}
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}
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if (fields !=null)
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hfr =true;
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else
@@ -414,8 +424,8 @@ public java.sql.ResultSet ExecSQL(String sql) throws SQLException
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}
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if (final_error !=null)
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throwfinal_error;
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returngetResultSet(this,fields,tuples,recv_status,1);
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//returnnew ResultSet(this, fields, tuples, recv_status,1);
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returngetResultSet(this,fields,tuples,recv_status,update_count);
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}
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}
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‎src/interfaces/jdbc/postgresql/Statement.java

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Original file line numberDiff line numberDiff line change
@@ -35,7 +35,7 @@ public Statement (Connection c)
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}
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/**
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* Execute a SQL statement thatretruns a single ResultSet
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* Execute a SQL statement thatreturns a single ResultSet
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*
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* @param sql typically a static SQL SELECT statement
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* @return a ResulSet that contains the data produced by the query

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