private String getSynonymOwner(String synonymName) {
PreparedStatement ps = null;
ResultSet rs = null;
String ret = null;
try {
ps =
getConnection()
.prepareStatement(
"select table_owner from sys.all_synonyms where table_name=? and owner=?");
ps.setString(1, synonymName);
ps.setString(2, getSchema());
rs = ps.executeQuery();
if (rs.next()) {
ret = rs.getString(1);
} else {
String databaseStructure = getDatabaseStructureInfo();
throw new RuntimeException(
"Wow! Synonym " + synonymName + " not found. How can it happen? " + databaseStructure);
}
} catch (SQLException e) {
String databaseStructure = getDatabaseStructureInfo();
GLogger.error(e.getMessage(), e);
throw new RuntimeException("Exception in getting synonym owner " + databaseStructure);
} finally {
dbHelper.close(rs, ps);
}
return ret;
}
private List getAllTables(Connection conn) throws SQLException {
DatabaseMetaData dbMetaData = conn.getMetaData();
ResultSet rs = dbMetaData.getTables(getCatalog(), getSchema(), null, null);
List tables = new ArrayList();
while (rs.next()) {
tables.add(createTable(conn, rs));
}
return tables;
}
private Table _getTable(String catalog, String schema, String tableName) throws SQLException {
if (tableName == null || tableName.trim().length() == 0)
throw new IllegalArgumentException("tableName must be not empty");
catalog = StringHelper.defaultIfEmpty(catalog, null);
schema = StringHelper.defaultIfEmpty(schema, null);
Connection conn = getConnection();
DatabaseMetaData dbMetaData = conn.getMetaData();
ResultSet rs = dbMetaData.getTables(catalog, schema, tableName, null);
while (rs.next()) {
Table table = createTable(conn, rs);
return table;
}
return null;
}
public String queryForString(String sql) {
Statement s = null;
ResultSet rs = null;
try {
s = getConnection().createStatement();
rs = s.executeQuery(sql);
if (rs.next()) {
return rs.getString(1);
}
return null;
} catch (SQLException e) {
e.printStackTrace();
return null;
} finally {
close(rs, null, s);
}
}
public void close(ResultSet rs, PreparedStatement ps, Statement... statements) {
try {
if (ps != null) ps.close();
if (rs != null) rs.close();
for (Statement s : statements) {
s.close();
}
} catch (Exception e) {
}
}
private List<String> getTablePrimaryKeys(Table table) throws SQLException {
// get the primary keys
List primaryKeys = new LinkedList();
ResultSet primaryKeyRs = null;
if (table.getOwnerSynonymName() != null) {
primaryKeyRs =
getMetaData()
.getPrimaryKeys(getCatalog(), table.getOwnerSynonymName(), table.getSqlName());
} else {
primaryKeyRs = getMetaData().getPrimaryKeys(getCatalog(), getSchema(), table.getSqlName());
}
while (primaryKeyRs.next()) {
String columnName = primaryKeyRs.getString("COLUMN_NAME");
GLogger.trace("primary key:" + columnName);
primaryKeys.add(columnName);
}
primaryKeyRs.close();
return primaryKeys;
}
private Table createTable(Connection conn, ResultSet rs) throws SQLException {
String realTableName = null;
try {
ResultSetMetaData rsMetaData = rs.getMetaData();
String schemaName = rs.getString("TABLE_SCHEM") == null ? "" : rs.getString("TABLE_SCHEM");
realTableName = rs.getString("TABLE_NAME");
String tableType = rs.getString("TABLE_TYPE");
String remarks = rs.getString("REMARKS");
if (remarks == null && dbHelper.isOracleDataBase()) {
remarks = getOracleTableComments(realTableName);
}
Table table = new Table();
table.setSqlName(realTableName);
table.setRemarks(remarks);
if ("SYNONYM".equals(tableType) && dbHelper.isOracleDataBase()) {
table.setOwnerSynonymName(getSynonymOwner(realTableName));
}
retriveTableColumns(table);
table.initExportedKeys(conn.getMetaData());
table.initImportedKeys(conn.getMetaData());
BeanHelper.copyProperties(
table, TableOverrideValuesProvider.getTableOverrideValues(table.getSqlName()));
return table;
} catch (SQLException e) {
throw new RuntimeException("create table object error,tableName:" + realTableName, e);
}
}
private String getDatabaseStructureInfo() {
ResultSet schemaRs = null;
ResultSet catalogRs = null;
String nl = System.getProperty("line.separator");
StringBuffer sb = new StringBuffer(nl);
// Let's give the user some feedback. The exception
// is probably related to incorrect schema configuration.
sb.append("Configured schema:").append(getSchema()).append(nl);
sb.append("Configured catalog:").append(getCatalog()).append(nl);
try {
schemaRs = getMetaData().getSchemas();
sb.append("Available schemas:").append(nl);
while (schemaRs.next()) {
sb.append(" ").append(schemaRs.getString("TABLE_SCHEM")).append(nl);
}
} catch (SQLException e2) {
GLogger.warn("Couldn't get schemas", e2);
sb.append(" ?? Couldn't get schemas ??").append(nl);
} finally {
dbHelper.close(schemaRs, null);
}
try {
catalogRs = getMetaData().getCatalogs();
sb.append("Available catalogs:").append(nl);
while (catalogRs.next()) {
sb.append(" ").append(catalogRs.getString("TABLE_CAT")).append(nl);
}
} catch (SQLException e2) {
GLogger.warn("Couldn't get catalogs", e2);
sb.append(" ?? Couldn't get catalogs ??").append(nl);
} finally {
dbHelper.close(catalogRs, null);
}
return sb.toString();
}
private List getTableColumns(
Table table, List primaryKeys, List indices, Map uniqueIndices, Map uniqueColumns)
throws SQLException {
// get the columns
List columns = new LinkedList();
ResultSet columnRs = getColumnsResultSet(table);
while (columnRs.next()) {
int sqlType = columnRs.getInt("DATA_TYPE");
String sqlTypeName = columnRs.getString("TYPE_NAME");
String columnName = columnRs.getString("COLUMN_NAME");
String columnDefaultValue = columnRs.getString("COLUMN_DEF");
String remarks = columnRs.getString("REMARKS");
if (remarks == null && dbHelper.isOracleDataBase()) {
remarks = getOracleColumnComments(table.getSqlName(), columnName);
}
// if columnNoNulls or columnNullableUnknown assume "not nullable"
boolean isNullable = (DatabaseMetaData.columnNullable == columnRs.getInt("NULLABLE"));
int size = columnRs.getInt("COLUMN_SIZE");
int decimalDigits = columnRs.getInt("DECIMAL_DIGITS");
boolean isPk = primaryKeys.contains(columnName);
boolean isIndexed = indices.contains(columnName);
String uniqueIndex = (String) uniqueIndices.get(columnName);
List columnsInUniqueIndex = null;
if (uniqueIndex != null) {
columnsInUniqueIndex = (List) uniqueColumns.get(uniqueIndex);
}
boolean isUnique = columnsInUniqueIndex != null && columnsInUniqueIndex.size() == 1;
if (isUnique) {
GLogger.trace("unique column:" + columnName);
}
Column column =
new Column(
table,
sqlType,
sqlTypeName,
columnName,
size,
decimalDigits,
isPk,
isNullable,
isIndexed,
isUnique,
columnDefaultValue,
remarks);
BeanHelper.copyProperties(
column, TableOverrideValuesProvider.getColumnOverrideValues(table, column));
columns.add(column);
}
columnRs.close();
return columns;
}
private void retriveTableColumns(Table table) throws SQLException {
GLogger.trace("-------setColumns(" + table.getSqlName() + ")");
List primaryKeys = getTablePrimaryKeys(table);
table.setPrimaryKeyColumns(primaryKeys);
// get the indices and unique columns
List indices = new LinkedList();
// maps index names to a list of columns in the index
Map uniqueIndices = new HashMap();
// maps column names to the index name.
Map uniqueColumns = new HashMap();
ResultSet indexRs = null;
try {
if (table.getOwnerSynonymName() != null) {
indexRs =
getMetaData()
.getIndexInfo(
getCatalog(), table.getOwnerSynonymName(), table.getSqlName(), false, true);
} else {
indexRs =
getMetaData().getIndexInfo(getCatalog(), getSchema(), table.getSqlName(), false, true);
}
while (indexRs.next()) {
String columnName = indexRs.getString("COLUMN_NAME");
if (columnName != null) {
GLogger.trace("index:" + columnName);
indices.add(columnName);
}
// now look for unique columns
String indexName = indexRs.getString("INDEX_NAME");
boolean nonUnique = indexRs.getBoolean("NON_UNIQUE");
if (!nonUnique && columnName != null && indexName != null) {
List l = (List) uniqueColumns.get(indexName);
if (l == null) {
l = new ArrayList();
uniqueColumns.put(indexName, l);
}
l.add(columnName);
uniqueIndices.put(columnName, indexName);
GLogger.trace("unique:" + columnName + " (" + indexName + ")");
}
}
} catch (Throwable t) {
// Bug #604761 Oracle getIndexInfo() needs major grants
// http://sourceforge.net/tracker/index.php?func=detail&aid=604761&group_id=36044&atid=415990
} finally {
dbHelper.close(indexRs, null);
}
List columns = getTableColumns(table, primaryKeys, indices, uniqueIndices, uniqueColumns);
for (Iterator i = columns.iterator(); i.hasNext(); ) {
Column column = (Column) i.next();
table.addColumn(column);
}
// In case none of the columns were primary keys, issue a warning.
if (primaryKeys.size() == 0) {
GLogger.warn(
"WARNING: The JDBC driver didn't report any primary key columns in "
+ table.getSqlName());
}
}