Author: shawkins
Date: 2010-04-11 23:02:54 -0400 (Sun, 11 Apr 2010)
New Revision: 2050
Modified:
trunk/documentation/reference/src/main/docbook/en-US/content/federated_planning.xml
Log:
TEIID-1040 changing to document the use of set statements
Modified:
trunk/documentation/reference/src/main/docbook/en-US/content/federated_planning.xml
===================================================================
---
trunk/documentation/reference/src/main/docbook/en-US/content/federated_planning.xml 2010-04-12
01:49:40 UTC (rev 2049)
+++
trunk/documentation/reference/src/main/docbook/en-US/content/federated_planning.xml 2010-04-12
03:02:54 UTC (rev 2050)
@@ -301,24 +301,13 @@
default for all queries in a Connection with either
setPartialResultsMode("true") on a DataSource or
partialResultsMode=true on a JDBC URL. In either case, partial
- results mode may be overridden on a per-query basis by setting
- the execution property on the Statement. To set this property,
- cast to the Teiid Statement JDBC API extension interface
- <classname>org.teiid.jdbc.TeiidStatement
- </classname>
+ results mode may be overridden with a set statement.
</para>
<example>
<title>Example - Setting Partial Results Mode</title>
<programlisting>Statement statement = ...obtain statement from
Connection...
-
-TeiidStatement mmStatement = statement.unWrap(TeiidStatement.class);
-
-mmStatement.setExecutionProperty(
- ExecutionProperties.PROP_PARTIAL_RESULTS_MODE,
"true");</programlisting>
+statement.execute("set partialResultsMode true");</programlisting>
</example>
- <para>This property can be set before each execution (via an
- execute method) on a Statement (or PreparedStatement or
- CallableStatement).</para>
</sect3>
<sect3>
<title>Source Unavailability</title>
@@ -354,7 +343,7 @@
<example>
<title>Example - Printing List of Failed Sources
</title>
- <programlisting>statement.setExecutionProperty(
PROP_PARTIAL_RESULTS_MODE, "true");
+ <programlisting>statement.execute("set partialResultsMode
true");
ResultSet results = statement.executeQuery("SELECT Name FROM Accounts");
SQLWarning warning = statement.getWarnings();
if(warning instanceof PartialResultsWarning) {
@@ -404,19 +393,12 @@
</para>
<example>
<title>Retrieving a Query Plan</title>
- <programlisting>TeiidStatement mmstatement =
statement.unWrap(TeiidStatement.class);
-String sql = "select ...";
-
-mmstatement.setExecutionProperty(ExecutionProperties.PROP_SQL_OPTIONS,
ExecutionProperties.SQL_OPTION_SHOWPLAN);
-//or
-//sql += " OPTION SHOWPLAN";
-//or
-//sql += " OPTION PLANONLY";
-
-ResultSet rs = statement.executeQuery(sql);
-
-PlanNode queryPlan = mmstatement.getPlanDescription();
-System.out.println(XMLOutputVisitor.convertToXML(queryPlan);</programlisting>
+ <programlisting>
+statement.execute("set showplan on");
+ResultSet rs = statement.executeQuery("select ...");
+TeiidStatement tstatement = statement.unWrap(TeiidStatement.class);
+PlanNode queryPlan = tstatement.getPlanDescription();
+System.out.println(queryPlan);</programlisting>
</example>
<para>The query plan is made available automatically in several
of Teiid's tools.</para>
Show replies by date