Java Doc for EqExpr.java in  » EJB-Server-resin-3.1.5 » resin » com » caucho » db » sql » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » EJB Server resin 3.1.5 » resin » com.caucho.db.sql 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   com.caucho.db.sql.Expr
      com.caucho.db.sql.EqExpr

EqExpr
class EqExpr extends Expr (Code)



Constructor Summary
 EqExpr(Expr left, Expr right)
    

Method Summary
protected  Exprbind(Query query)
    
public  longcost(ArrayList<FromItem> fromList)
     Returns the cost based on the given FromList.
public  intevalBoolean(QueryContext context)
     Evaluates the expression as a boolean.
public  voidevalGroup(QueryContext context)
     Evaluates aggregate functions during the group phase.
public  StringevalString(QueryContext context)
    
public  IndexExprgetIndexExpr(FromItem item)
     Returns an index expression if available.
public  ClassgetType()
     Returns the type of the expression.
public  booleanisNull(QueryContext context)
    
public  longsubCost(ArrayList<FromItem> fromList)
     Returns the cost based on a subitem.
public  StringtoString()
    


Constructor Detail
EqExpr
EqExpr(Expr left, Expr right)(Code)




Method Detail
bind
protected Expr bind(Query query) throws SQLException(Code)



cost
public long cost(ArrayList<FromItem> fromList)(Code)
Returns the cost based on the given FromList.



evalBoolean
public int evalBoolean(QueryContext context) throws SQLException(Code)
Evaluates the expression as a boolean.



evalGroup
public void evalGroup(QueryContext context) throws SQLException(Code)
Evaluates aggregate functions during the group phase.
Parameters:
  state - the current database tuple



evalString
public String evalString(QueryContext context) throws SQLException(Code)



getIndexExpr
public IndexExpr getIndexExpr(FromItem item)(Code)
Returns an index expression if available.



getType
public Class getType()(Code)
Returns the type of the expression.



isNull
public boolean isNull(QueryContext context) throws SQLException(Code)
Evaluates the expression for nulls



subCost
public long subCost(ArrayList<FromItem> fromList)(Code)
Returns the cost based on a subitem.



toString
public String toString()(Code)



Fields inherited from com.caucho.db.sql.Expr
final static long COST_CONSTANT(Code)(Java Doc)
final static long COST_INDEX(Code)(Java Doc)
final static long COST_INVALID(Code)(Java Doc)
final static long COST_NO_TABLE(Code)(Java Doc)
final static long COST_SCAN(Code)(Java Doc)
final static long COST_UNIQUE(Code)(Java Doc)
final public static int FALSE(Code)(Java Doc)
final protected static L10N L(Code)(Java Doc)
final public static int TRUE(Code)(Java Doc)
final public static int UNKNOWN(Code)(Java Doc)

Methods inherited from com.caucho.db.sql.Expr
protected Expr bind(Query query) throws SQLException(Code)(Java Doc)
public long cost(ArrayList<FromItem> fromList)(Code)(Java Doc)
public Order createOrder(int index)(Code)(Java Doc)
public int evalBoolean(QueryContext context) throws SQLException(Code)(Java Doc)
public long evalDate(QueryContext context) throws SQLException(Code)(Java Doc)
public double evalDouble(QueryContext context) throws SQLException(Code)(Java Doc)
public void evalGroup(QueryContext context) throws SQLException(Code)(Java Doc)
public long evalLong(QueryContext context) throws SQLException(Code)(Java Doc)
public InputStream evalStream(QueryContext context) throws SQLException(Code)(Java Doc)
public String evalString(QueryContext context) throws SQLException(Code)(Java Doc)
public int evalToBuffer(QueryContext context, byte[] buffer, int columnType) throws SQLException(Code)(Java Doc)
public void evalToResult(QueryContext context, SelectResult result) throws SQLException(Code)(Java Doc)
public RowIterateExpr getIndexExpr(FromItem fromItem)(Code)(Java Doc)
public String getName()(Code)(Java Doc)
public int getSQLType()(Code)(Java Doc)
public Table getTable()(Code)(Java Doc)
public Class getType()(Code)(Java Doc)
public void initGroup(QueryContext context) throws SQLException(Code)(Java Doc)
public boolean isBinaryStream()(Code)(Java Doc)
public boolean isBoolean()(Code)(Java Doc)
public boolean isDouble()(Code)(Java Doc)
public boolean isLong()(Code)(Java Doc)
public boolean isNull(QueryContext context) throws SQLException(Code)(Java Doc)
public boolean isSelect(QueryContext context) throws SQLException(Code)(Java Doc)
public void splitAnd(ArrayList<Expr> andProduct)(Code)(Java Doc)
public long subCost(ArrayList<FromItem> fromList)(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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