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## org.apache.openjpa.jdbc.sql
Class Join

    java.lang.Object
      org.apache.openjpa.jdbc.sql.Join

All Implemented Interfaces:
  Cloneable, JoinSyntaxes

    public class Join

extends Object
implements Cloneable, JoinSyntaxes

Represents a SQL join.

Author:
  Abe White

Field Summary
`static int` | `TYPE_CROSS`
`static int` | `TYPE_INNER`
`static int` | `TYPE_OUTER`

Fields inherited from interface org.apache.openjpa.jdbc.sql.JoinSyntaxes
`SYNTAX_DATABASE, SYNTAX_SQL92, SYNTAX_TRADITIONAL`

Method Summary
`Object` | `clone()`
`boolean` | `equals(Object other)`
`String` | `getAlias1()`
`String` | `getAlias2()`
`ForeignKey` | `getForeignKey()`
`Joins` | `getRelationJoins()` If joining a relation, the joins leading to the relation.
`ClassMapping` | `getRelationTarget()` If joining a relation, the target type.
`int` | `getSubclasses()` If joining a relation, how to deal with subclasses.
`Table` | `getTable1()`
`Table` | `getTable2()`
`int` | `getType()`
`int` | `hashCode()`
`boolean` | `isForeignKeyInversed()`
`Join` | `reverse()` Return a join that is this join in reverse.
`void` | `setRelation(ClassMapping target, int subs, Joins joins)` When joining a relation, set target type and how to deal with subclasses.
`void` | `setType(int type)`
`String` | `toString()`

Methods inherited from class java.lang.Object
`finalize, getClass, notify, notifyAll, wait, wait, wait`

Field Detail

### TYPE_INNER

    public static final int TYPE_INNER

See Also:
  Constant Field Values

### TYPE_OUTER

    public static final int TYPE_OUTER

See Also:
  Constant Field Values

### TYPE_CROSS

    public static final int TYPE_CROSS

See Also:
  Constant Field Values

Method Detail

### getType

    public int getType()

### setType

    public void setType(int type)

### getAlias1

    public String getAlias1()

### getAlias2

    public String getAlias2()

### getTable1

    public Table getTable1()

### getTable2

    public Table getTable2()

### getForeignKey

    public ForeignKey getForeignKey()

### isForeignKeyInversed

    public boolean isForeignKeyInversed()

### getRelationTarget

    public ClassMapping getRelationTarget()

  If joining a relation, the target type.

### getSubclasses

    public int getSubclasses()

  If joining a relation, how to deal with subclasses. See subclass constants in `Select`.

### getRelationJoins

    public Joins getRelationJoins()

  If joining a relation, the joins leading to the relation.

### setRelation

    public void setRelation(ClassMapping target,
                            int subs,
                            Joins joins)

  When joining a relation, set target type and how to deal with subclasses. See subclass constants in `#Select`.

### reverse

    public Join reverse()

  Return a join that is this join in reverse.

### hashCode

    public int hashCode()

  Overrides:
    `hashCode` in class `Object`

### equals

    public boolean equals(Object other)

  Overrides:
    `equals` in class `Object`

### toString

    public String toString()

  Overrides:
    `toString` in class `Object`

### clone

    public Object clone()

  Overrides:
    `clone` in class `Object`

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Copyright © 2006 Apache Software Foundation. All Rights Reserved.