com.agimatec.sql.meta.checking
Class DatabaseSchemaChecker

java.lang.Object
  com.agimatec.sql.meta.checking.DatabaseSchemaChecker

Direct Known Subclasses:

MySqlSchemaChecker, OracleSchemaChecker, PostgresSchemaChecker

public abstract class DatabaseSchemaChecker
extends Object

Description: Compare a database schema against sql scripts and find differences.
Example for mysql:

       JdbcConfig config = new JdbcConfig();
         config.setDriver("com.mysql.jdbc.Driver");
         config.setConnect("jdbc:mysql://localhost:3306/mysql_db");
         config.getProperties().put("user", "root");
         config.getProperties().put("password", "");
         JdbcDatabase targetDatabase = JdbcDatabaseFactory.createInstance(config);
         targetDatabase.begin();

         DatabaseSchemaChecker checker = DatabaseSchemaChecker.forDbms("mysql");
         checker.setDatabase(targetDatabase);
         List urls = new ArrayList();
         urls.add(getClass().getClassLoader().getResource("mysql/mysql-schema.sql"));
         // add more script URLs that belong to the database schema...
         checker.checkDatabaseSchema(urls.toArray(new URL[urls.size()]));

         targetDatabase.close();
 

User: roman.stumm
Date: 24.04.2007
Time: 14:58:47
Copyright: Agimatec GmbH

Field Summary

protected JdbcDatabase	database
protected static org.slf4j.Logger	logger
protected List	myFoundErrors
protected Map	unknownColumns

Constructor Summary

DatabaseSchemaChecker()

Method Summary

void	addUnmappedColumn(String tableName, String columnName) configuration - declare a column as not mapped in the database, so that it will not be treated as an error during assertSchemaComplete().
void	assertCatalogsComplete(CatalogDescription schemaConfig, CatalogDescription databaseConfig)
abstract void	assertObjectsValid() API - check for invalid objects in the database
protected void	assertTrue(String s, boolean b)
void	checkDatabaseSchema(URL[] scripts) API - check the database for compatibility with the given XML-DDL configuration.
protected void	compareForeignKeyDescription(TableDescription xmlTableDescription, TableDescription databaseTableDescription)
protected void	compareIndexDescription(TableDescription xmlTableDescription, TableDescription databaseTableDescription)
protected void	compareSingleIndexDescription(IndexDescription xmlIndexDescription, IndexDescription databaseIndexDescription)
static DatabaseSchemaChecker	forDbms(String dbms)
JdbcDatabase	getDatabase()
protected abstract DDLScriptSqlMetaFactory	getDDLScriptSqlMetaFactory()
Map	getUnmappedColumns()
Collection	getUnmappedColumns(String tableName)
protected boolean	isPrecisionCompatible(ColumnDescription expected, ColumnDescription actual)
protected boolean	isScaleCompatible(ColumnDescription expected, ColumnDescription actual)
protected boolean	isTypeCompatible(ColumnDescription expected, ColumnDescription actual)
protected void	log(Object obj) log INFO or Exception
protected void	print(Object obj) log INFO and print to console
protected abstract CatalogDescription	readDatabaseCatalog(String[] tableNames)
void	setDatabase(JdbcDatabase aDatabase)
protected void	throwAssertions()

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static final org.slf4j.Logger logger

myFoundErrors

protected final List myFoundErrors

database

protected JdbcDatabase database

unknownColumns

protected Map unknownColumns

Constructor Detail

DatabaseSchemaChecker

public DatabaseSchemaChecker()

Method Detail

forDbms

public static DatabaseSchemaChecker forDbms(String dbms)

getDatabase

public JdbcDatabase getDatabase()

setDatabase

public void setDatabase(JdbcDatabase aDatabase)

addUnmappedColumn

public void addUnmappedColumn(String tableName,
                              String columnName)

configuration - declare a column as not mapped in the database, so that it will not be treated as an error during assertSchemaComplete().

Parameters:

tableName -

columnName -

getUnmappedColumns

public Map getUnmappedColumns()

Returns:

a Map (read-write)

getUnmappedColumns

public Collection getUnmappedColumns(String tableName)

Parameters:

tableName -

Returns:

a collection (read-only)

throwAssertions

protected void throwAssertions()

assertObjectsValid

public abstract void assertObjectsValid()
                                 throws Exception

API - check for invalid objects in the database

Throws:

Exception

checkDatabaseSchema

public void checkDatabaseSchema(URL[] scripts)
                         throws Exception

API - check the database for compatibility with the given XML-DDL configuration. Additional add all DDL in the scripts to the schema.

Parameters:

scripts - - scripts for schema (Soll-Zustand) Der Ist-Zustand steht in der Datenbank und wird mit dem Soll-Zustand verglichen.

Throws:

Exception

getDDLScriptSqlMetaFactory

protected abstract DDLScriptSqlMetaFactory getDDLScriptSqlMetaFactory()

readDatabaseCatalog

protected abstract CatalogDescription readDatabaseCatalog(String[] tableNames)
                                                   throws SQLException,
                                                          IOException

Throws:

SQLException

IOException

assertCatalogsComplete

public void assertCatalogsComplete(CatalogDescription schemaConfig,
                                   CatalogDescription databaseConfig)

compareSingleIndexDescription

protected void compareSingleIndexDescription(IndexDescription xmlIndexDescription,
                                             IndexDescription databaseIndexDescription)

compareIndexDescription

protected void compareIndexDescription(TableDescription xmlTableDescription,
                                       TableDescription databaseTableDescription)

isTypeCompatible

protected boolean isTypeCompatible(ColumnDescription expected,
                                   ColumnDescription actual)

isScaleCompatible

protected boolean isScaleCompatible(ColumnDescription expected,
                                    ColumnDescription actual)

isPrecisionCompatible

protected boolean isPrecisionCompatible(ColumnDescription expected,
                                        ColumnDescription actual)

compareForeignKeyDescription

protected void compareForeignKeyDescription(TableDescription xmlTableDescription,
                                            TableDescription databaseTableDescription)

assertTrue

protected void assertTrue(String s,
                          boolean b)

print

protected void print(Object obj)

log INFO and print to console

log

protected void log(Object obj)

log INFO or Exception

Parameters:

obj -