Package org.hibernate.mapping
Class Constraint
- java.lang.Object
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- org.hibernate.mapping.Constraint
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- All Implemented Interfaces:
Serializable
,Exportable
,RelationalModel
- Direct Known Subclasses:
ForeignKey
,PrimaryKey
,UniqueKey
public abstract class Constraint extends Object implements RelationalModel, Exportable, Serializable
A relational constraint.- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description Constraint()
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Method Summary
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.hibernate.boot.model.relational.Exportable
getExportIdentifier
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Methods inherited from interface org.hibernate.mapping.RelationalModel
sqlCreateString, sqlDropString
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Method Detail
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getName
public String getName()
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setName
public void setName(String name)
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generateName
public static String generateName(String prefix, Table table, Column... columns)
If a constraint is not explicitly named, this is called to generate a unique hash using the table and column names. Static so the name can be generated prior to creating the Constraint. They're cached, keyed by name, in multiple locations.- Returns:
- String The generated name
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generateName
public static String generateName(String prefix, Table table, List<Column> columns)
Helper method forgenerateName(String, Table, Column...)
.- Returns:
- String The generated name
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hashedName
public static String hashedName(String s)
Hash a constraint name using MD5. Convert the MD5 digest to base 35 (full alphanumeric), guaranteeing that the length of the name will always be smaller than the 30 character identifier restriction enforced by a few dialects.- Parameters:
s
- The name to be hashed.- Returns:
- String The hashed name.
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addColumn
public void addColumn(Column column)
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addColumns
public void addColumns(Iterator columnIterator)
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containsColumn
public boolean containsColumn(Column column)
- Returns:
- true if this constraint already contains a column with same name.
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getColumnSpan
public int getColumnSpan()
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getColumn
public Column getColumn(int i)
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columnIterator
@Deprecated public Iterator<Column> columnIterator()
Deprecated.(Since 6.0) usegetColumnIterator()
instead.This is a duplicate method, that has been removed in v.6.0.getColumnIterator()
is the one that will stay.
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getTable
public Table getTable()
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setTable
public void setTable(Table table)
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isGenerated
public boolean isGenerated(Dialect dialect)
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sqlDropString
public String sqlDropString(SqlStringGenerationContext context, String defaultCatalog, String defaultSchema)
- Specified by:
sqlDropString
in interfaceRelationalModel
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sqlCreateString
public String sqlCreateString(Mapping p, SqlStringGenerationContext context, String defaultCatalog, String defaultSchema)
- Specified by:
sqlCreateString
in interfaceRelationalModel
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sqlConstraintString
public abstract String sqlConstraintString(SqlStringGenerationContext context, String constraintName, String defaultCatalog, String defaultSchema)
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generatedConstraintNamePrefix
public abstract String generatedConstraintNamePrefix()
- Returns:
- String The prefix to use in generated constraint names. Examples: "UK_", "FK_", and "PK_".
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