public Iterator sqlAlterStrings(
Dialect dialect,
Mapping p,
TableMetadata tableInfo,
String defaultCatalog,
String defaultSchema)
throws HibernateException {
StringBuffer root =
new StringBuffer("alter table ")
.append(getQualifiedName(dialect, defaultCatalog, defaultSchema))
.append(' ')
.append(dialect.getAddColumnString());
Iterator iter = getColumnIterator();
List results = new ArrayList();
while (iter.hasNext()) {
Column column = (Column) iter.next();
ColumnMetadata columnInfo = tableInfo.getColumnMetadata(column.getName());
if (columnInfo == null) {
// the column doesnt exist at all.
StringBuffer alter =
new StringBuffer(root.toString())
.append(' ')
.append(column.getQuotedName(dialect))
.append(' ')
.append(column.getSqlType(dialect, p));
String defaultValue = column.getDefaultValue();
if (defaultValue != null) {
alter.append(" default ").append(defaultValue);
if (column.isNullable()) {
alter.append(dialect.getNullColumnString());
} else {
alter.append(" not null");
}
}
boolean useUniqueConstraint =
column.isUnique()
&& dialect.supportsUnique()
&& (!column.isNullable() || dialect.supportsNotNullUnique());
if (useUniqueConstraint) {
alter.append(" unique");
}
if (column.hasCheckConstraint() && dialect.supportsColumnCheck()) {
alter.append(" check(").append(column.getCheckConstraint()).append(")");
}
String columnComment = column.getComment();
if (columnComment != null) alter.append(dialect.getColumnComment(columnComment));
results.add(alter.toString());
}
}
return results.iterator();
}
public Iterator sqlAlterStrings(
Dialect dialect,
Mapping p,
TableInformation tableInfo,
String defaultCatalog,
String defaultSchema)
throws HibernateException {
StringBuilder root =
new StringBuilder("alter table ")
.append(getQualifiedName(dialect, defaultCatalog, defaultSchema))
.append(' ')
.append(dialect.getAddColumnString());
Iterator iter = getColumnIterator();
List results = new ArrayList();
while (iter.hasNext()) {
final Column column = (Column) iter.next();
final ColumnInformation columnInfo =
tableInfo.getColumn(Identifier.toIdentifier(column.getName(), column.isQuoted()));
if (columnInfo == null) {
// the column doesnt exist at all.
StringBuilder alter =
new StringBuilder(root.toString())
.append(' ')
.append(column.getQuotedName(dialect))
.append(' ')
.append(column.getSqlType(dialect, p));
String defaultValue = column.getDefaultValue();
if (defaultValue != null) {
alter.append(" default ").append(defaultValue);
}
if (column.isNullable()) {
alter.append(dialect.getNullColumnString());
} else {
alter.append(" not null");
}
if (column.isUnique()) {
String keyName = Constraint.generateName("UK_", this, column);
UniqueKey uk = getOrCreateUniqueKey(keyName);
uk.addColumn(column);
alter.append(dialect.getUniqueDelegate().getColumnDefinitionUniquenessFragment(column));
}
if (column.hasCheckConstraint() && dialect.supportsColumnCheck()) {
alter.append(" check(").append(column.getCheckConstraint()).append(")");
}
String columnComment = column.getComment();
if (columnComment != null) {
alter.append(dialect.getColumnComment(columnComment));
}
alter.append(dialect.getAddColumnSuffixString());
results.add(alter.toString());
}
}
if (results.isEmpty()) {
Logger.getLogger(SchemaUpdate.class)
.debugf("No alter strings for table : %s", getQuotedName());
}
return results.iterator();
}
