/** Tests compatibility. */
public boolean equalsColumn(Column col) {
if (col == this) return true;
if (col == null) return false;
if (!getQualifiedPath().equals(col.getQualifiedPath())) return false;
if (!isCompatible(
col.getType(), col.getTypeIdentifier().getName(), col.getSize(), col.getDecimalDigits()))
return false;
if (getType() == Types.VARCHAR
&& getSize() > 0
&& col.getSize() > 0
&& getSize() != col.getSize()) return false;
return true;
}
/** Copy information from the given column to this one. */
public void copy(Column from) {
if (from == null) return;
if (DBIdentifier.isNull(getIdentifier())) setIdentifier(from.getIdentifier());
if (getType() == Types.OTHER) setType(from.getType());
if (DBIdentifier.isNull(getTypeIdentifier())) setTypeIdentifier(from.getTypeIdentifier());
if (getJavaType() == JavaTypes.OBJECT) setJavaType(from.getJavaType());
if (getSize() == 0) setSize(from.getSize());
if (getDecimalDigits() == 0) setDecimalDigits(from.getDecimalDigits());
if (getDefaultString() == null) setDefaultString(from.getDefaultString());
if (!isNotNullExplicit() && from.isNotNullExplicit()) setNotNull(from.isNotNull());
if (!isAutoAssigned()) setAutoAssigned(from.isAutoAssigned());
if (!isRelationId()) setRelationId(from.isRelationId());
if (!isImplicitRelation()) setImplicitRelation(from.isRelationId());
if (DBIdentifier.isNull(getTargetIdentifier())) setTargetIdentifier(from.getTargetIdentifier());
if (getTargetField() == null) setTargetField(from.getTargetField());
if (_flags == 0) _flags = from._flags;
if (!isXML()) setXML(from.isXML());
if (!isUni1MFK()) setUni1MFK(from.isUni1MFK());
for (Constraint c : _constraints) {
addConstraint(c);
}
}