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java.lang.Object org.apache.openjpa.jdbc.schema.Constraint org.apache.openjpa.jdbc.schema.LocalConstraint org.apache.openjpa.jdbc.schema.Unique
public class Unique
Represents a unique constraint. It can also represent a partial constraint.
Constructor Summary | |
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Unique()
Default constructor. |
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Unique(String name,
Table table)
Constructor. |
Method Summary | |
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void |
deref()
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boolean |
equalsUnique(Unique unq)
Return true if the structure of this primary key matches that of the given one (same table, same columns). |
int |
getRefCount()
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boolean |
isLogical()
Return whether this constraint is a logical constraint only; i.e. |
void |
ref()
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Methods inherited from class org.apache.openjpa.jdbc.schema.LocalConstraint |
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addColumn, columnsMatch, containsColumn, derefColumns, equalsLocalConstraint, getColumns, refColumns, removeColumn, setColumns |
Methods inherited from class org.apache.openjpa.jdbc.schema.Constraint |
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getColumnName, getFullName, getName, getSchemaName, getTable, getTableName, isDeferred, setColumnName, setDeferred, setName, setSchemaName, setTableName, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public Unique()
public Unique(String name, Table table)
name
- the name of the constraint, if anytable
- the table of the constraintMethod Detail |
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public boolean isLogical()
Constraint
isLogical
in class Constraint
public boolean equalsUnique(Unique unq)
public int getRefCount()
public void ref()
public void deref()
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