@Override
public int compareTo(Object other) {
Index o = (Index) other;
int returnValue = this.getTable().getName().compareTo(o.getTable().getName());
if (returnValue == 0) {
String thisName = StringUtils.trimToEmpty(this.getName());
String oName = StringUtils.trimToEmpty(o.getName());
returnValue = thisName.compareTo(oName);
}
// We should not have two indexes that have the same name and tablename
/*if (returnValue == 0) {
returnValue = this.getColumnName().compareTo(o.getColumnName());
}*/
return returnValue;
}
/**
* Generates the {@link Index} example (taken from {@link IndexExistsPrecondition}).
*
* @param database the database instance.
* @param schema the schema instance.
* @param tableName the table name of the index.
* @return the index example.
*/
protected Index getIndexExample(
final Database database, final Schema schema, final String tableName) {
final Index example = new Index();
if (tableName != null) {
example.setTable(
(Table)
new Table()
.setName(database.correctObjectName(getTableName(), Table.class))
.setSchema(schema));
}
example.setName(database.correctObjectName(getIndexName(), Index.class));
if (StringUtils.trimToNull(getColumnNames()) != null) {
for (final String columnName : getColumnNames().split("\\s*,\\s*")) {
final Column column = new Column(database.correctObjectName(columnName, Column.class));
example.getColumns().add(column);
}
}
return example;
}
public static List<SqlStatement> getAlterTableStatements(
AlterTableVisitor alterTableVisitor,
Database database,
String catalogName,
String schemaName,
String tableName)
throws DatabaseException {
DatabaseSnapshot snapshot = null; // todo
List<SqlStatement> statements = new ArrayList<SqlStatement>();
Table table = null;
try {
table =
SnapshotGeneratorFactory.getInstance()
.createSnapshot(
(Table)
new Table().setName(tableName).setSchema(new Schema(new Catalog(null), null)),
database);
} catch (InvalidExampleException e) {
throw new UnexpectedLiquibaseException(e);
}
List<ColumnConfig> createColumns = new Vector<ColumnConfig>();
List<ColumnConfig> copyColumns = new Vector<ColumnConfig>();
if (table != null) {
for (Column column : table.getColumns()) {
ColumnConfig new_column = new ColumnConfig(column);
if (alterTableVisitor.createThisColumn(new_column)) {
createColumns.add(new_column);
}
ColumnConfig copy_column = new ColumnConfig(column);
if (alterTableVisitor.copyThisColumn(copy_column)) {
copyColumns.add(copy_column);
}
}
}
for (ColumnConfig column : alterTableVisitor.getColumnsToAdd()) {
if (alterTableVisitor.createThisColumn(column)) {
createColumns.add(column);
}
if (alterTableVisitor.copyThisColumn(column)) {
copyColumns.add(column);
}
}
List<Index> newIndices = new Vector<Index>();
for (Index index :
new ArrayList<
Index>()) { // todo SnapshotGeneratorFactory.getInstance().getGenerator(Index.class,
// database).get(new Schema(new Catalog(null), schemaName), database)) {
if (index.getTable().getName().equalsIgnoreCase(tableName)) {
if (alterTableVisitor.createThisIndex(index)) {
newIndices.add(index);
}
}
}
// rename table
String temp_table_name = tableName + "_temporary";
statements.add(new RenameTableStatement(catalogName, schemaName, tableName, temp_table_name));
// create temporary table
CreateTableChange ct_change_tmp = new CreateTableChange();
ct_change_tmp.setSchemaName(schemaName);
ct_change_tmp.setTableName(tableName);
for (ColumnConfig column : createColumns) {
ct_change_tmp.addColumn(column);
}
statements.addAll(Arrays.asList(ct_change_tmp.generateStatements(database)));
// copy rows to temporary table
statements.add(new CopyRowsStatement(temp_table_name, tableName, copyColumns));
// delete original table
statements.add(new DropTableStatement(catalogName, schemaName, temp_table_name, false));
// validate indices
statements.add(new ReindexStatement(catalogName, schemaName, tableName));
// add remaining indices
for (Index index_config : newIndices) {
statements.add(
new CreateIndexStatement(
index_config.getName(),
catalogName,
schemaName,
tableName,
index_config.isUnique(),
index_config.getAssociatedWithAsString(),
index_config.getColumns().toArray(new String[index_config.getColumns().size()])));
}
return statements;
}
@Override
public Change[] fixMissing(
DatabaseObject missingObject,
DiffOutputControl control,
Database referenceDatabase,
Database comparisonDatabase,
ChangeGeneratorChain chain) {
List<Change> returnList = new ArrayList<Change>();
UniqueConstraint uc = (UniqueConstraint) missingObject;
if (uc.getTable() == null) {
return null;
}
AddUniqueConstraintChange change = new AddUniqueConstraintChange();
change.setTableName(uc.getTable().getName());
if (uc.getBackingIndex() != null && control.getIncludeTablespace()) {
change.setTablespace(uc.getBackingIndex().getTablespace());
}
if (control.getIncludeCatalog()) {
change.setCatalogName(uc.getTable().getSchema().getCatalogName());
}
if (control.getIncludeSchema()) {
change.setSchemaName(uc.getTable().getSchema().getName());
}
change.setConstraintName(uc.getName());
change.setColumnNames(uc.getColumnNames());
change.setDeferrable(uc.isDeferrable() ? Boolean.TRUE : null);
change.setInitiallyDeferred(uc.isInitiallyDeferred() ? Boolean.TRUE : null);
change.setDisabled(uc.isDisabled() ? Boolean.TRUE : null);
if (comparisonDatabase instanceof OracleDatabase) {
Index backingIndex = uc.getBackingIndex();
if (backingIndex != null && backingIndex.getName() != null) {
Change[] changes =
ChangeGeneratorFactory.getInstance()
.fixMissing(backingIndex, control, referenceDatabase, comparisonDatabase);
if (changes != null) {
returnList.addAll(Arrays.asList(changes));
change.setForIndexName(backingIndex.getName());
Schema schema = backingIndex.getSchema();
if (schema != null) {
if (control.getIncludeCatalog()) {
change.setForIndexCatalogName(schema.getCatalogName());
}
if (control.getIncludeSchema()) {
change.setForIndexSchemaName(schema.getName());
}
}
}
}
}
Index backingIndex = uc.getBackingIndex();
// if (backingIndex == null) {
// Index exampleIndex = new Index().setTable(uc.getTable());
// for (String col : uc.getColumns()) {
// exampleIndex.getColumns().add(col);
// }
// control.setAlreadyHandledMissing(exampleIndex);
// } else {
control.setAlreadyHandledMissing(backingIndex);
// }
returnList.add(change);
return returnList.toArray(new Change[returnList.size()]);
}
@Override
public Change[] fixMissing(
DatabaseObject missingObject,
DiffOutputControl control,
Database referenceDatabase,
Database comparisonDatabase,
ChangeGeneratorChain chain) {
List<Change> returnList = new ArrayList<Change>();
PrimaryKey pk = (PrimaryKey) missingObject;
AddPrimaryKeyChange change = new AddPrimaryKeyChange();
change.setTableName(pk.getTable().getName());
if (control.getIncludeCatalog()) {
change.setCatalogName(pk.getTable().getSchema().getCatalogName());
}
if (control.getIncludeSchema()) {
change.setSchemaName(pk.getTable().getSchema().getName());
}
change.setConstraintName(pk.getName());
change.setColumnNames(pk.getColumnNames());
if (control.getIncludeTablespace()) {
change.setTablespace(pk.getTablespace());
}
if (referenceDatabase instanceof MSSQLDatabase
&& pk.getBackingIndex() != null
&& pk.getBackingIndex().getClustered() != null
&& !pk.getBackingIndex().getClustered()) {
change.setClustered(false);
}
if (comparisonDatabase instanceof OracleDatabase
|| (comparisonDatabase instanceof DB2Database
&& pk.getBackingIndex() != null
&& !comparisonDatabase.isSystemObject(pk.getBackingIndex()))) {
Index backingIndex = pk.getBackingIndex();
if (backingIndex != null && backingIndex.getName() != null) {
try {
if (!control.getIncludeCatalog() && !control.getIncludeSchema()) {
CatalogAndSchema schema =
comparisonDatabase.getDefaultSchema().customize(comparisonDatabase);
backingIndex
.getTable()
.setSchema(
schema.getCatalogName(),
schema
.getSchemaName()); // set table schema so it is found in the correct schema
}
if (referenceDatabase.equals(comparisonDatabase)
|| !SnapshotGeneratorFactory.getInstance().has(backingIndex, comparisonDatabase)) {
Change[] fixes =
ChangeGeneratorFactory.getInstance()
.fixMissing(backingIndex, control, referenceDatabase, comparisonDatabase);
if (fixes != null) {
for (Change fix : fixes) {
if (fix != null) {
returnList.add(fix);
}
}
}
}
} catch (Exception e) {
throw new UnexpectedLiquibaseException(e);
}
change.setForIndexName(backingIndex.getName());
Schema schema = backingIndex.getSchema();
if (schema != null) {
if (control.getIncludeCatalog()) {
change.setForIndexCatalogName(schema.getCatalogName());
}
if (control.getIncludeSchema()) {
change.setForIndexSchemaName(schema.getName());
}
}
}
}
control.setAlreadyHandledMissing(pk.getBackingIndex());
returnList.add(change);
return returnList.toArray(new Change[returnList.size()]);
}