com.caucho.amber.expr
Class EqualJoinExpr

java.lang.Object
  com.caucho.amber.expr.AbstractAmberExpr
      com.caucho.amber.expr.JoinExpr
          com.caucho.amber.expr.EqualJoinExpr

All Implemented Interfaces:

AmberExpr

public class EqualJoinExpr
extends JoinExpr

Links two tables by their key fields.

Field Summary

Fields inherited from interface com.caucho.amber.expr.AmberExpr

IS_INNER_JOIN, USES_DATA

Method Summary

AmberExpr	bindSelect(QueryParser parser) Binds the expression as a select item.
boolean	bindToFromItem() Binds the link to the from item.
boolean	equals(java.lang.Object o) Test for equality.
void	generateHaving(CharBuffer cb) Generates the having expression.
void	generateUpdateWhere(CharBuffer cb) Generates the (update) where expression.
void	generateWhere(CharBuffer cb) Generates the where expression.
FromItem	getJoinTarget() Returns the parent join clause.
boolean	isBoolean() Returns true for a boolean expression.
AmberExpr	replace(IdExpr id) Returns the id expr with the joined expression.
AmberExpr	replace(IdFieldExpr id) Returns the id expr with the joined expression.
java.lang.String	toString()

Methods inherited from class com.caucho.amber.expr.JoinExpr

getJoinParent, getWhere, isDependent, replace

Methods inherited from class com.caucho.amber.expr.AbstractAmberExpr

createBoolean, exists, exists, findItem, generateJoin, generateSelect, getCacheObject, getColumnCount, getObject, getType, hasRelationship, replaceJoin, setInternalArgType, usesFrom, usesFrom

Methods inherited from class java.lang.Object

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

Method Detail

isBoolean

public boolean isBoolean()

Returns true for a boolean expression.

Specified by:

isBoolean in interface AmberExpr

Overrides:

isBoolean in class JoinExpr

bindSelect

public AmberExpr bindSelect(QueryParser parser)

Binds the expression as a select item.

Specified by:

bindSelect in interface AmberExpr

Overrides:

bindSelect in class JoinExpr

bindToFromItem

public boolean bindToFromItem()

Binds the link to the from item.

Overrides:

bindToFromItem in class JoinExpr

getJoinTarget

public FromItem getJoinTarget()

Returns the parent join clause.

Overrides:

getJoinTarget in class JoinExpr

replace

public AmberExpr replace(IdFieldExpr id)

Returns the id expr with the joined expression.

replace

public AmberExpr replace(IdExpr id)

Returns the id expr with the joined expression.

Overrides:

replace in class JoinExpr

generateWhere

public void generateWhere(CharBuffer cb)

Generates the where expression.

Specified by:

generateWhere in interface AmberExpr

Overrides:

generateWhere in class AbstractAmberExpr

generateUpdateWhere

public void generateUpdateWhere(CharBuffer cb)

Generates the (update) where expression.

Specified by:

generateUpdateWhere in interface AmberExpr

Overrides:

generateUpdateWhere in class AbstractAmberExpr

generateHaving

public void generateHaving(CharBuffer cb)

Generates the having expression.

Specified by:

generateHaving in interface AmberExpr

Overrides:

generateHaving in class AbstractAmberExpr

equals

public boolean equals(java.lang.Object o)

Test for equality.

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object