org.eclipse.wst.rdb.internal.models.sql.datatypes
Interface Domain
- All Superinterfaces:
- DataType, DistinctUserDefinedType, org.eclipse.emf.ecore.EModelElement, org.eclipse.emf.ecore.ENamedElement, org.eclipse.emf.ecore.EObject, org.eclipse.emf.common.notify.Notifier, SQLObject, UserDefinedType
- All Known Implementing Classes:
- DomainImpl
- public interface Domain
- extends DistinctUserDefinedType
A representation of the model object 'Domain'.
4.12 Domains
A domain is a set of permissible values. A domain is defined in a schema and is identified by a . The purpose of a domain is to constrain the set of valid values that can be stored in a column of a base table by various operations.
A domain definition specifies a data type. It may also specify a that further restricts the valid values of the domain and a that specifies the value to be used in the absence of an explicitly specified value or column default.
A domain is described by a domain descriptor. A domain descriptor includes:
- The name of the domain.
- The data type descriptor of the data type of the domain.
- The value of , if any, of the domain.
- The domain constraint descriptors of the domain constraints, if any, of the domain.
4.17.3 Domain constraints
A domain constraint is a constraint that is specified for a domain. It is applied to all columns that are based on that domain, and to all values cast to that domain. A domain constraint is described by a domain constraint descriptor. In addition to the components of every constraint descriptor a domain constraint descriptor includes:
- The .
A domain constraint is satisfied by SQL-data if and only if, for any table T that has a column named C based on that domain, the specified , with each occurrence of VALUE replaced by C, is not False for any row of T. A domain constraint is satisfied by the result of a if and only if the specified , with each occurrence of VALUE replaced by that result, is not False.
The following features are supported:
- See Also:
SQLDataTypesPackage.getDomain()
Method Summary |
org.eclipse.emf.common.util.EList |
getConstraint()
Returns the value of the 'Constraint' containment reference list. |
java.lang.String |
getDefaultValue()
Returns the value of the 'Default Value' attribute. |
void |
setDefaultValue(java.lang.String value)
Sets the value of the 'Default Value ' attribute. |
Methods inherited from interface org.eclipse.wst.rdb.internal.models.sql.datatypes.DataType |
setContainer |
Methods inherited from interface org.eclipse.wst.rdb.internal.models.sql.schema.SQLObject |
addEAnnotation, addEAnnotationDetail, getDependencies, getDescription, getEAnnotation, getEAnnotationDetail, getLabel, removeEAnnotationDetail, setAnnotationDetail, setDescription, setLabel |
Methods inherited from interface org.eclipse.emf.ecore.ENamedElement |
getName, setName |
Methods inherited from interface org.eclipse.emf.ecore.EModelElement |
getEAnnotations |
Methods inherited from interface org.eclipse.emf.ecore.EObject |
eAllContents, eClass, eContainer, eContainingFeature, eContainmentFeature, eContents, eCrossReferences, eGet, eGet, eIsProxy, eIsSet, eResource, eSet, eUnset |
Methods inherited from interface org.eclipse.emf.common.notify.Notifier |
eAdapters, eDeliver, eNotify, eSetDeliver |
getConstraint
public org.eclipse.emf.common.util.EList getConstraint()
- Returns the value of the 'Constraint' containment reference list.
The list contents are of type
CheckConstraint
.
If the meaning of the 'Constraint' containment reference list isn't clear,
there really should be more of a description here...
- Returns:
- the value of the 'Constraint' containment reference list.
- See Also:
SQLDataTypesPackage.getDomain_Constraint()
getDefaultValue
public java.lang.String getDefaultValue()
- Returns the value of the 'Default Value' attribute.
If the meaning of the 'Default Value' attribute isn't clear,
there really should be more of a description here...
- Returns:
- the value of the 'Default Value' attribute.
- See Also:
setDefaultValue(String)
,
SQLDataTypesPackage.getDomain_DefaultValue()
setDefaultValue
public void setDefaultValue(java.lang.String value)
- Sets the value of the '
Default Value
' attribute.
- Parameters:
value
- the new value of the 'Default Value' attribute.- See Also:
getDefaultValue()