Module io.github.mmm.entity.bean

Package io.github.mmm.entity.bean.sql.constraint

Class Constraint

java.lang.Object

io.github.mmm.entity.bean.sql.constraint.Constraint

Direct Known Subclasses:

CheckConstraint, ForeignKeyConstraint, NotNullConstraint, PrimaryKeyConstraint, UniqueConstraint

public abstract class Constraint
extends Object

A Constraint on one or multiple columns.

Since:

1.0.0

Constructor Summary

Constructors

Constructor	Description
Constraint(String name, io.github.mmm.value.PropertyPath<?> column)	The constructor.

Method Summary

Modifier and Type	Method	Description
protected static String	createName(String prefix, io.github.mmm.property.ReadableProperty<?> property)
protected static String	createName(String prefix, io.github.mmm.property.ReadableProperty<?> property, boolean addProperty)
List<io.github.mmm.value.PropertyPath<?>>	getColumns()
String	getName()
abstract String	getType()
String	toString()
protected void	toString(StringBuilder sb)
protected void	toStringColumns(StringBuilder sb)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Constraint

public Constraint(String name,
                  io.github.mmm.value.PropertyPath<?> column)

The constructor.

Parameters:

name - the name.

column - the (first) column.

Method Detail

getName

public String getName()

Returns:

the name of the predicate (e.g. "FK_Person_Order").

getType

public abstract String getType()

Returns:

the type of this Constraint (e.g. "CHECK" or "FOREIGN KEY").

getColumns

public List<io.github.mmm.value.PropertyPath<?>> getColumns()

Returns:

the List with the properties representing the columns this Constraint applies to.

toString

public String toString()

Overrides:

toString in class Object

toString

protected void toString(StringBuilder sb)

Parameters:

sb - the StringBuilder to append to.

toStringColumns

protected void toStringColumns(StringBuilder sb)

Parameters:

sb - the StringBuilder to append to.

createName

protected static final String createName(String prefix,
                                         io.github.mmm.property.ReadableProperty<?> property)

Parameters:

prefix - the constraint prefix (XX_).

property - the ReadableProperty representing the column.

Returns:

the Constraint name.

createName

protected static final String createName(String prefix,
                                         io.github.mmm.property.ReadableProperty<?> property,
                                         boolean addProperty)

Parameters:

prefix - the constraint prefix (XX_).

property - the ReadableProperty representing the column.

addProperty - - true to add the property path, false otherwise.

Returns:

the Constraint name.