@Override
protected void readIndexes(
DatabaseSnapshot snapshot, String schema, DatabaseMetaData databaseMetaData)
throws DatabaseException, SQLException {
Database database = snapshot.getDatabase();
updateListeners("Reading indexes for " + database.toString() + " ...");
String query =
"select aic.index_name, 3 AS TYPE, aic.table_name, aic.column_name, aic.column_position AS ORDINAL_POSITION, null AS FILTER_CONDITION, ai.tablespace_name AS TABLESPACE, ai.uniqueness FROM all_ind_columns aic, all_indexes ai WHERE aic.table_owner='"
+ database.convertRequestedSchemaToSchema(schema)
+ "' and aic.index_name = ai.index_name ORDER BY INDEX_NAME, ORDINAL_POSITION";
Statement statement = null;
ResultSet rs = null;
Map<String, Index> indexMap = null;
try {
statement =
((JdbcConnection) database.getConnection()).getUnderlyingConnection().createStatement();
rs = statement.executeQuery(query);
indexMap = new HashMap<String, Index>();
while (rs.next()) {
String indexName = convertFromDatabaseName(rs.getString("INDEX_NAME"));
String tableName = rs.getString("TABLE_NAME");
String tableSpace = rs.getString("TABLESPACE");
String columnName = convertFromDatabaseName(rs.getString("COLUMN_NAME"));
if (columnName == null) {
// nothing to index, not sure why these come through sometimes
continue;
}
short type = rs.getShort("TYPE");
boolean nonUnique;
String uniqueness = rs.getString("UNIQUENESS");
if ("UNIQUE".equals(uniqueness)) {
nonUnique = false;
} else {
nonUnique = true;
}
short position = rs.getShort("ORDINAL_POSITION");
String filterCondition = rs.getString("FILTER_CONDITION");
if (type == DatabaseMetaData.tableIndexStatistic) {
continue;
}
Index index;
if (indexMap.containsKey(indexName)) {
index = indexMap.get(indexName);
} else {
index = new Index();
Table table = snapshot.getTable(tableName);
if (table == null) {
continue; // probably different schema
}
index.setTable(table);
index.setTablespace(tableSpace);
index.setName(indexName);
index.setUnique(!nonUnique);
index.setFilterCondition(filterCondition);
indexMap.put(indexName, index);
}
for (int i = index.getColumns().size(); i < position; i++) {
index.getColumns().add(null);
}
index.getColumns().set(position - 1, columnName);
}
} finally {
JdbcUtils.closeResultSet(rs);
JdbcUtils.closeStatement(statement);
}
for (Map.Entry<String, Index> entry : indexMap.entrySet()) {
snapshot.getIndexes().add(entry.getValue());
}
/*
* marks indexes as "associated with" instead of "remove it"
* Index should have associations with:
* foreignKey, primaryKey or uniqueConstraint
* */
for (Index index : snapshot.getIndexes()) {
for (PrimaryKey pk : snapshot.getPrimaryKeys()) {
if (index.getTable().getName().equalsIgnoreCase(pk.getTable().getName())
&& index.getColumnNames().equals(pk.getColumnNames())) {
index.addAssociatedWith(Index.MARK_PRIMARY_KEY);
}
}
for (ForeignKey fk : snapshot.getForeignKeys()) {
if (index.getTable().getName().equalsIgnoreCase(fk.getForeignKeyTable().getName())
&& index.getColumnNames().equals(fk.getForeignKeyColumns())) {
index.addAssociatedWith(Index.MARK_FOREIGN_KEY);
}
}
for (UniqueConstraint uc : snapshot.getUniqueConstraints()) {
if (index.getTable().getName().equalsIgnoreCase(uc.getTable().getName())
&& index.getColumnNames().equals(uc.getColumnNames())) {
index.addAssociatedWith(Index.MARK_UNIQUE_CONSTRAINT);
}
}
}
}
@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()]);
}