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org.apache.derbyTesting.functionTests.tests.lang
Class streams  

java.lang.Object
  org.apache.derbyTesting.functionTests.tests.lang.streams

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public class streams

extends java.lang.Object

This tests streams, and when we should not materialize it. Beetle entry 4896, 4955. Some of the code comes from conn/largeStreams.java. But this program figures out whether a stream is materialized or not in a different way. Part of the reason is that this test should be run nightly to catch regressions and shouldn't require too much disk space. It figures out whether a stream is materialized or not by comparing the stack levels of different cases. The stack level is when reading the last byte of the stream. According to the current code, the stack is about 10 levels deeper when reading the stream from store per page (not materialized before hand), comparing to the case when materializing from sql language layer. We don't expect this to change dramatically for some time. And this can always be adjusted when needed. For bug 5592 - match db's limits for long varchar which is 32700. In order to enforce that limit we now materialize the stream to make sure we are not trying to overstuff data in long varchar. Because of this, I had to make some changes into the stack level checking for long varchars.

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Field Summary
private static java.sql.Connection	conn
private static int	pkCount

 

Constructor Summary

streams()

 

Method Summary
private static void	doWork()
private static int	insertLongBinary(java.sql.PreparedStatement ps, int kbytes)
private static int	insertLongString(java.sql.PreparedStatement ps, int kchars, boolean isInsert)
static void	main(java.lang.String[] args)
(package private) static void	setup()
(package private) static void	teardown()
(package private) static void	verifyCount(int count, int expect)

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

pkCount

private static int pkCount

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conn

private static java.sql.Connection conn

Constructor Detail

streams

public streams()

Method Detail

main

public static void main(java.lang.String[] args)

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setup

static void setup()
           throws java.sql.SQLException

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teardown

static void teardown()
              throws java.sql.SQLException

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verifyCount

static void verifyCount(int count,
                        int expect)
                 throws java.sql.SQLException

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doWork

private static void doWork()
                    throws java.lang.Exception

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insertLongString

private static int insertLongString(java.sql.PreparedStatement ps,
                                    int kchars,
                                    boolean isInsert)
                             throws java.sql.SQLException

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insertLongBinary

private static int insertLongBinary(java.sql.PreparedStatement ps,
                                    int kbytes)
                             throws java.sql.SQLException

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> org >> apache >> derbyTesting >> functionTests >> tests >> [ lang overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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