private boolean containsColumn(Collection columns, String column) {
if (columns.contains(column)) return true;
for (Iterator it = columns.iterator(); it.hasNext(); ) {
if (((String) it.next()).equalsIgnoreCase(column)) return true;
}
return false;
}
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 String getKeyColumnsAsString() throws XavaException {
StringBuffer r = new StringBuffer();
Collection columns = new HashSet();
for (Iterator it = getMetaModel().getAllKeyPropertiesNames().iterator(); it.hasNext(); ) {
String pr = (String) it.next();
String column = getColumn(pr);
if (columns.contains(column)) continue;
columns.add(column);
r.append(column);
r.append(' ');
}
return r.toString().trim();
}
public Collection getCmpFields() throws XavaException {
Collection r = new ArrayList();
Collection mappedColumns = new HashSet();
for (Iterator it = getPropertyMappings().iterator(); it.hasNext(); ) {
PropertyMapping pMapping = (PropertyMapping) it.next();
r.addAll(pMapping.getCmpFields());
mappedColumns.add(pMapping.getColumn());
}
for (Iterator it = getReferenceMappings().iterator(); it.hasNext(); ) {
ReferenceMapping rMapping = (ReferenceMapping) it.next();
for (Iterator itFields = rMapping.getCmpFields().iterator(); itFields.hasNext(); ) {
CmpField field = (CmpField) itFields.next();
if (!mappedColumns.contains(field.getColumn())) {
r.add(field);
mappedColumns.add(field.getColumn());
}
}
}
return r;
}
