Quadcap Embeddable Database

com.quadcap.sql.BinaryExpression Class Reference

Inheritance diagram for com.quadcap.sql.BinaryExpression:

com.quadcap.sql.Expression Externalizable List of all members.

Detailed Description

Expression class for all binary ops.

Author:
Stan Bailes

Definition at line 62 of file BinaryExpression.java.

Public Member Functions

 BinaryExpression ()
 Default constructor.

 BinaryExpression (int op, Expression e, Expression f)
 Parser's constructor: A binary expression node consists of an opcode and two "child" expressions.

int rank ()
 Returns zero if this is a scalar expression, one if it's a vector type and 2 if it's a table/cursor type.

Type getType (Session session, Cursor cursor) throws SQLException
 Return the expression's type if known.

Value getValue (Session session, Cursor cursor) throws SQLException
 If this is a scalar, return its value.

void invert ()
 Negate the logical value of the expression.

String toString ()
void visitSubExpressions (ExpressionVisitor ev)
 Give a visitor access to the parse tree.

void readExternal (ObjectInput in) throws IOException, ClassNotFoundException
void writeExternal (ObjectOutput out) throws IOException

Package Attributes

Expression e = null
Expression f = null
int op = -1
boolean not = false

Constructor & Destructor Documentation

com.quadcap.sql.BinaryExpression.BinaryExpression (   ) 
 

Default constructor.

Definition at line 71 of file BinaryExpression.java.

com.quadcap.sql.BinaryExpression.BinaryExpression (  int  op,
Expression  e,
Expression  f
) 
 

Parser's constructor: A binary expression node consists of an opcode and two "child" expressions.

Definition at line 77 of file BinaryExpression.java.

Member Function Documentation

Type com.quadcap.sql.BinaryExpression.getType (  Session  session,
Cursor  cursor
)  throws SQLException [virtual]
 

Return the expression's type if known.

Implements com.quadcap.sql.Expression.

Definition at line 85 of file BinaryExpression.java.

References com.quadcap.sql.BinaryExpression.e, com.quadcap.sql.Expression.getType(), and com.quadcap.sql.BinaryExpression.getType().

Referenced by com.quadcap.sql.BinaryExpression.getType().

Value com.quadcap.sql.BinaryExpression.getValue (  Session  session,
Cursor  cursor
)  throws SQLException
 

If this is a scalar, return its value.

Reimplemented from com.quadcap.sql.Expression.

Definition at line 89 of file BinaryExpression.java.

References com.quadcap.sql.BinaryExpression.e, com.quadcap.sql.BinaryExpression.f, com.quadcap.sql.Expression.getValue(), com.quadcap.sql.BinaryExpression.getValue(), com.quadcap.sql.BinaryExpression.not, com.quadcap.sql.BinaryExpression.op, and com.quadcap.sql.types.Value.unop().

Referenced by com.quadcap.sql.BinaryExpression.getValue().

void com.quadcap.sql.BinaryExpression.invert (   ) 
 

Negate the logical value of the expression.

Reimplemented from com.quadcap.sql.Expression.

Definition at line 99 of file BinaryExpression.java.

References com.quadcap.sql.BinaryExpression.not.

int com.quadcap.sql.BinaryExpression.rank (   )  [virtual]
 

Returns zero if this is a scalar expression, one if it's a vector type and 2 if it's a table/cursor type.

Implements com.quadcap.sql.Expression.

Definition at line 83 of file BinaryExpression.java.

void com.quadcap.sql.BinaryExpression.readExternal (  ObjectInput  in  )  throws IOException, ClassNotFoundException
 

Definition at line 113 of file BinaryExpression.java.

References com.quadcap.sql.BinaryExpression.e, com.quadcap.sql.BinaryExpression.f, com.quadcap.sql.BinaryExpression.not, com.quadcap.sql.BinaryExpression.op, and com.quadcap.sql.BinaryExpression.readExternal().

Referenced by com.quadcap.sql.BinaryExpression.readExternal().

String com.quadcap.sql.BinaryExpression.toString (   )  [virtual]
 

Implements com.quadcap.sql.Expression.

Definition at line 103 of file BinaryExpression.java.

References com.quadcap.sql.BinaryExpression.e, com.quadcap.sql.BinaryExpression.f, com.quadcap.sql.BinaryExpression.not, com.quadcap.sql.BinaryExpression.op, and com.quadcap.sql.Expression.toString().

void com.quadcap.sql.BinaryExpression.visitSubExpressions (  ExpressionVisitor  ev  ) 
 

Give a visitor access to the parse tree.

Reimplemented from com.quadcap.sql.Expression.

Definition at line 108 of file BinaryExpression.java.

References com.quadcap.sql.BinaryExpression.e, com.quadcap.sql.BinaryExpression.f, com.quadcap.sql.ExpressionVisitor.visit(), and com.quadcap.sql.BinaryExpression.visitSubExpressions().

Referenced by com.quadcap.sql.BinaryExpression.visitSubExpressions().

void com.quadcap.sql.BinaryExpression.writeExternal (  ObjectOutput  out  )  throws IOException
 

Definition at line 122 of file BinaryExpression.java.

References com.quadcap.sql.BinaryExpression.e, com.quadcap.sql.BinaryExpression.f, com.quadcap.sql.BinaryExpression.not, com.quadcap.sql.BinaryExpression.op, and com.quadcap.sql.BinaryExpression.writeExternal().

Referenced by com.quadcap.sql.BinaryExpression.writeExternal().

Member Data Documentation

Expression com.quadcap.sql.BinaryExpression.e = null [package]
 

Definition at line 63 of file BinaryExpression.java.

Referenced by com.quadcap.sql.Analyze.getConjunctives(), com.quadcap.sql.IndexCursor.getCursorRange(), com.quadcap.sql.BinaryExpression.getType(), com.quadcap.sql.BinaryExpression.getValue(), com.quadcap.sql.Analyze.isConstantCompareToTable(), com.quadcap.sql.Analyze.isJoinColumn(), com.quadcap.sql.Analyze.isJoinExpression(), com.quadcap.sql.Analyze.isTermOrConstant(), com.quadcap.sql.BinaryExpression.readExternal(), com.quadcap.sql.BinaryExpression.toString(), com.quadcap.sql.BinaryExpression.visitSubExpressions(), and com.quadcap.sql.BinaryExpression.writeExternal().

Expression com.quadcap.sql.BinaryExpression.f = null [package]
 

Definition at line 64 of file BinaryExpression.java.

Referenced by com.quadcap.sql.Analyze.getConjunctives(), com.quadcap.sql.IndexCursor.getCursorRange(), com.quadcap.sql.BinaryExpression.getValue(), com.quadcap.sql.Analyze.isConstantCompareToTable(), com.quadcap.sql.Analyze.isJoinColumn(), com.quadcap.sql.Analyze.isJoinExpression(), com.quadcap.sql.Analyze.isTermOrConstant(), com.quadcap.sql.BinaryExpression.readExternal(), com.quadcap.sql.BinaryExpression.toString(), com.quadcap.sql.BinaryExpression.visitSubExpressions(), and com.quadcap.sql.BinaryExpression.writeExternal().

boolean com.quadcap.sql.BinaryExpression.not = false [package]
 

Definition at line 66 of file BinaryExpression.java.

Referenced by com.quadcap.sql.Analyze.getConjunctives(), com.quadcap.sql.BinaryExpression.getValue(), com.quadcap.sql.BinaryExpression.invert(), com.quadcap.sql.BinaryExpression.readExternal(), com.quadcap.sql.BinaryExpression.toString(), and com.quadcap.sql.BinaryExpression.writeExternal().

int com.quadcap.sql.BinaryExpression.op = -1 [package]
 

Definition at line 65 of file BinaryExpression.java.

Referenced by com.quadcap.sql.Analyze.getConjunctives(), com.quadcap.sql.IndexCursor.getCursorRange(), com.quadcap.sql.BinaryExpression.getValue(), com.quadcap.sql.Analyze.isJoinColumn(), com.quadcap.sql.BinaryExpression.readExternal(), com.quadcap.sql.BinaryExpression.toString(), and com.quadcap.sql.BinaryExpression.writeExternal().