Unique index validator
======================

- The class name ezcDbSchemaNonUniqueIndexNameValidator sounds a bit strange.
  I think ezcDbSchemaUniqueIndexNameValidator would fit better, since it
  indicates what is validated and not what violates the validation.

  - Changed

Table prefixes
==============

- The prefix mechanism simply removes a string with the length of the prefix
  from tables when a schema is read from a DB. We should check there if the
  actual prefix is used and throw an exception if this is not the case.

  - No, we should not. The whole idea is that you can multiple "applications"
	in the database, each with a different prefix. Throwing an exception when
	another "application" is found would be a real PITA.

- The condition ::
	
	 if ( $prefix === '' || $tableName !== $tableNameWithoutPrefix )

  (DatabaseSchema/src/handlers/sqlite/reader.php +74)
  looks like a tautology. Same for the other handlers.

  - Not really, as the table should be scanned both:
    - if there is no prefix configured
	- if the $tableName has the prefix, in which case it get's stripped out
	  with $tableNameWithoutPrefix = substr( $tableName, strlen( $prefix ) );,
	  and thus $tableName and $tableNameWithoutPrefix are different then. If
	  it does *not* have the prefix, the two variables would have the same
	  content.

	I added a comment to the code about it.

- The fetchSchema() method looks the same for all handlers except for the pure
  SQL statement. Those should be moved to a common method in
  ezcDbSchemaDbReader.

  - Done

- The interface ezcDbSchemaDbWriter was changed in this commit, the method
  isQueryAllowed() was added. This looks like a BC break.

  - It isn't, as the base class ezcDbSchemaCommonSqlWriter implements
	isQueryAllowed.

- The interface ezcDbSchemaDbReader was made an abstract class, which looks
  like a BC break.

  - Fixed, I think in a non BC-way, but please double check.


General
=======

- 7 test failures with 5.1.6 and 5.2.6 and SQLite in memory DB: ::

		Time: 1 second

		There were 7 failures:

		1) testConstructorAllDefault(ezcDatabaseSchemaFieldTest)
		Failed asserting that <boolean:false> matches expected value <integer:0>.
		expected integer <0>
		difference       <0>
		got integer      < >
		/home/dotxp/dev/PHP/actual/ezcomponents/trunk/DatabaseSchema/tests/schema_field_test.php:21

		2) testConstructorAllGiven2(ezcDatabaseSchemaFieldTest)
		Failed asserting that <boolean:false> matches expected value <integer:0>.
		expected integer <0>
		difference       <0>
		got integer      < >
		/home/dotxp/dev/PHP/actual/ezcomponents/trunk/DatabaseSchema/tests/schema_field_test.php:43

		3) testXmlInternal2(ezcDatabaseSchemaSqliteTest)
		Failed asserting that two objects are equal.
		--- Expected
		+++ Actual
		@@ -14,10 +14,10 @@
		 
					 [is_shadow] => ezcDbSchemaField Object
						 (
		-                    [type] => boolean
		+                    [type] => integer
							 [length] => 0
							 [notNull] => 1
		-                    [default] => false
		+                    [default] => 0
							 [autoIncrement] => 
							 [unsigned] => 
						 )
		@@ -53,7 +53,7 @@
								 )
		 
							 [primary] => 
		-                    [unique] => 
		+                    [unique] => 1
						 )
		 
				 )

		/home/dotxp/dev/PHP/actual/ezcomponents/trunk/DatabaseSchema/tests/generic_test.php:227

		4) testXmlInternal3(ezcDatabaseSchemaSqliteTest)
		Failed asserting that two objects are equal.
		--- Expected
		+++ Actual
		@@ -28,7 +28,7 @@
								 )
		 
							 [primary] => 
		-                    [unique] => 
		+                    [unique] => 1
						 )
		 
				 )

		/home/dotxp/dev/PHP/actual/ezcomponents/trunk/DatabaseSchema/tests/generic_test.php:253

		5) testXmlInternal4(ezcDatabaseSchemaSqliteTest)
		Failed asserting that two objects are equal.
		--- Expected
		+++ Actual
		@@ -6,7 +6,7 @@
						 (
							 [type] => text
							 [length] => 255
		-                    [notNull] => 1
		+                    [notNull] => 
							 [default] => 
							 [autoIncrement] => 
							 [unsigned] => 
		@@ -16,7 +16,7 @@
						 (
							 [type] => text
							 [length] => 2
		-                    [notNull] => 1
		+                    [notNull] => 
							 [default] => 
							 [autoIncrement] => 
							 [unsigned] => 
		@@ -26,7 +26,7 @@
						 (
							 [type] => text
							 [length] => 50
		-                    [notNull] => 1
		+                    [notNull] => 
							 [default] => 
							 [autoIncrement] => 
							 [unsigned] => 
		@@ -46,7 +46,7 @@
						 (
							 [type] => integer
							 [length] => 0
		-                    [notNull] => 1
		+                    [notNull] => 
							 [default] => 0
							 [autoIncrement] => 
							 [unsigned] => 
		@@ -57,7 +57,7 @@
							 [type] => integer
							 [length] => 0
							 [notNull] => 1
		-                    [default] => 0
		+                    [default] => 
							 [autoIncrement] => 1
							 [unsigned] => 
						 )

		/home/dotxp/dev/PHP/actual/ezcomponents/trunk/DatabaseSchema/tests/generic_test.php:293

		6) testDatatypes(ezcDatabaseSchemaSqliteTest)
		Failed asserting that two strings are equal.
		--- Expected
		+++ Actual
		@@ -9,8 +9,8 @@
			</field>
			<field>
			 <name>test_boolean</name>
		-    <type>boolean</type>
		-    <default>true</default>
		+    <type>integer</type>
		+    <default>1</default>
			</field>
			<field>
			 <name>test_clob</name>

		/home/dotxp/dev/PHP/actual/ezcomponents/trunk/DatabaseSchema/tests/generic_test.php:338

		7) testApply1(ezcDatabaseSchemaSqliteDiffTest)
		Failed asserting that two objects are equal.
		--- Expected
		+++ Actual
		@@ -55,7 +55,7 @@
											 [type] => integer
											 [length] => 0
											 [notNull] => 1
		-                                    [default] => 
		+                                    [default] => 0
											 [autoIncrement] => 
											 [unsigned] => 
										 )

		/home/dotxp/dev/PHP/actual/ezcomponents/trunk/DatabaseSchema/tests/generic_diff_test.php:196

		FAILURES!
		Tests: 104, Failures: 7.

		Generating code coverage report, this may take a moment.