## org.hibernate.sql
Class JoinFragment

    java.lang.Object
      org.hibernate.sql.JoinFragment

Direct Known Subclasses:
  ANSIJoinFragment, OracleJoinFragment, QueryJoinFragment, Sybase11JoinFragment

    public abstract class JoinFragment

extends Object

An abstract SQL join fragment renderer

Author:
  Gavin King

Field Summary
`static int` `FULL_JOIN`
`static int` `INNER_JOIN`
`static int` `LEFT_OUTER_JOIN`
`static int` `RIGHT_OUTER_JOIN`

Constructor Summary
`JoinFragment()`

Method Summary
`abstract boolean` `addCondition(String condition)`
`protected boolean` `addCondition(StringBuffer buffer, String on)` Appends the 'on' condition to the buffer, returning true if the condition was added.
`abstract void` `addCondition(String alias, String[] fkColumns, String[] pkColumns)`
`abstract void` `addCrossJoin(String tableName, String alias)`
`void` `addFragment(JoinFragment ojf)`
`abstract void` `addJoin(String tableName, String alias, String[] fkColumns, String[] pkColumns, int joinType)`
`abstract void` `addJoin(String tableName, String alias, String[] fkColumns, String[] pkColumns, int joinType, String on)`
`abstract void` `addJoins(String fromFragment, String whereFragment)`
`abstract JoinFragment` `copy()`
`boolean` `hasFilterCondition()` True if the where fragment is from a filter condition.
`boolean` `hasThetaJoins()`
`void` `setHasFilterCondition(boolean b)`
`void` `setHasThetaJoins(boolean hasThetaJoins)`
`abstract String` `toFromFragmentString()`
`abstract String` `toWhereFragmentString()`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### INNER_JOIN

    public static final int INNER_JOIN

See Also:
  Constant Field Values

### FULL_JOIN

    public static final int FULL_JOIN

See Also:
  Constant Field Values

### LEFT_OUTER_JOIN

    public static final int LEFT_OUTER_JOIN

See Also:
  Constant Field Values

### RIGHT_OUTER_JOIN

    public static final int RIGHT_OUTER_JOIN

See Also:
  Constant Field Values

Constructor Detail

### JoinFragment

    public JoinFragment()

Method Detail

### addJoin

    public abstract void addJoin(String tableName,
                                 String alias,
                                 String[] fkColumns,
                                 String[] pkColumns,
                                 int joinType)

### addJoin

    public abstract void addJoin(String tableName,
                                 String alias,
                                 String[] fkColumns,
                                 String[] pkColumns,
                                 int joinType,
                                 String on)

### addCrossJoin

    public abstract void addCrossJoin(String tableName,
                                      String alias)

### addJoins

    public abstract void addJoins(String fromFragment,
                                  String whereFragment)

### toFromFragmentString

    public abstract String toFromFragmentString()

### toWhereFragmentString

    public abstract String toWhereFragmentString()

### addCondition

    public abstract void addCondition(String alias,
                                      String[] fkColumns,
                                      String[] pkColumns)

### addCondition

    public abstract boolean addCondition(String condition)

### copy

    public abstract JoinFragment copy()

### addFragment

    public void addFragment(JoinFragment ojf)

### addCondition

    protected boolean addCondition(StringBuffer buffer,
                                   String on)

  Appends the 'on' condition to the buffer, returning true if the condition was added. Returns false if the 'on' condition was empty.

  Parameters:
    `buffer` - The buffer to append the 'on' condition to.
    `on` - The 'on' condition.
  Returns:
    Returns true if the condition was added, false if the condition was already in 'on' string.

### hasFilterCondition

    public boolean hasFilterCondition()

  True if the where fragment is from a filter condition.

  Returns:
    True if the where fragment is from a filter condition.

### setHasFilterCondition

    public void setHasFilterCondition(boolean b)

### hasThetaJoins

    public boolean hasThetaJoins()

### setHasThetaJoins

    public void setHasThetaJoins(boolean hasThetaJoins)

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