private void loadDatabaseMetadata() {
if (!databaseMetadataLoaded) {
String componentName = "UNKNOWN";
Connection con = null;
try {
componentName = getMetaComponent().getName();
con = DataSourceConnectionProvider.getByComponent(componentName).getConnection();
DatabaseMetaData metaData = con.getMetaData();
supportsSchemasInDataManipulation = metaData.supportsSchemasInDataManipulation();
Collection timeDateFunctions =
Strings.toCollection(metaData.getTimeDateFunctions().toUpperCase());
//
// another solution instead of the use of 'if' would be to use a xml with
// the information of the functions from each BBDD
if ("DB2 UDB for AS/400".equals(metaData.getDatabaseProductName())
|| "Oracle".equals(metaData.getDatabaseProductName())
|| "PostgresSQL".equals(metaData.getDatabaseProductName())) {
supportsTranslateFunction = true;
}
if ("Oracle".equals(metaData.getDatabaseProductName())
|| "PostgreSQL".equals(metaData.getDatabaseProductName())) {
supportsYearFunction = supportsMonthFunction = false;
} else {
supportsYearFunction = timeDateFunctions.contains("YEAR");
supportsMonthFunction = timeDateFunctions.contains("MONTH");
}
databaseMetadataLoaded = true;
} catch (Exception ex) {
log.warn(XavaResources.getString("load_database_metadata_warning"));
} finally {
try {
if (con != null) {
con.close();
}
} catch (SQLException e) {
log.warn(XavaResources.getString("close_connection_warning"));
}
}
}
}
public MetaTab cloneMetaTab() {
try {
MetaTab r = (MetaTab) clone();
if (r.metaPropertiesHiddenCalculated != null) {
r.metaPropertiesHiddenCalculated = new ArrayList(metaPropertiesHiddenCalculated);
}
if (r.metaPropertiesHidden != null) {
r.metaPropertiesHidden = new ArrayList(metaPropertiesHidden);
}
if (r.propertiesNames != null) {
r.propertiesNames = new ArrayList(propertiesNames);
}
if (r.metaProperties != null) {
r.metaProperties = new ArrayList(metaProperties);
}
if (r.metaPropertiesCalculated != null) {
r.metaPropertiesCalculated = new ArrayList(metaPropertiesCalculated);
}
if (r.tableColumns != null) {
r.tableColumns = new ArrayList(tableColumns);
}
if (r.hiddenPropertiesNames != null) {
r.hiddenPropertiesNames = new ArrayList(hiddenPropertiesNames);
}
if (r.propertiesNamesWithKeyAndHidden != null) {
r.propertiesNamesWithKeyAndHidden = new ArrayList(propertiesNamesWithKeyAndHidden);
}
if (r.hiddenTableColumns != null) {
r.hiddenTableColumns = new ArrayList(hiddenTableColumns);
}
if (r.metaPropertiesTab != null) {
r.metaPropertiesTab = new HashMap(metaPropertiesTab);
}
return r;
} catch (CloneNotSupportedException ex) {
throw new RuntimeException(XavaResources.getString("clone_error", getClass()));
}
}