ajax.expression
Class Expression

java.lang.Object
  |
  +--ajax.expression.Expression

public class Expression

extends java.lang.Object

Inner Class Summary

class

Expression.MyBoolean AUXILIARY CLASSES

Field Summary

static int	T_ALGO_CALL
static int	T_AND
static int	T_AS_REF
static int	T_ASTERISC
static int	T_CHECK
static int	T_COMPOSED
static int	T_CONST_REF
static int	T_CONSTANT CONSTANTS
static int	T_DEP
static int	T_DIV
static int	T_EQ
static int	T_EQEQ
static int	T_EXCEPTION
static int	T_FOREIGN
static int	T_FROM
static int	T_FUNCT_CALL
static int	T_GE
static int	T_GT
static int	T_IF_STAT
static int	T_IMPLICIT
static int	T_LE
static int	T_LIKE
static int	T_LT
static int	T_MINUS
static int	T_MULT
static int	T_NE
static int	T_NOT
static int	T_NOT_NULL
static int	T_OR
static int	T_ORDER
static int	T_OUT_TRANSF
static int	T_PLUS
static int	T_PROJECT
static int	T_QUERY
static int	T_REFERENCE
static int	T_TRANSF
static int	T_UNIQUE
static int	T_VAR_DECL
static int	T_VAR_REF

Constructor Summary

Expression()
Constructor

Expression(Expression exp)
Constructor

Expression(java.lang.Object obj, int type, int nb_args)
Constructor

Method Summary

int	argsCount() Returns the number of arguments
void	clone(Expression exp) Creates a copy of an expression
boolean	equals(java.lang.Object obj) Redefines the equal() method for references
Expression	getArg(int index) Returns the argument of an expression given its index The argument of an expression is another expression
void	getAsReferences(java.util.List list) Gets names of the set of As references that belongs to an expression
java.lang.String	getBeginSeparator() Returns a string with a start separator when the expression value is a string or a char
Constant	getConstant() Returns a constant for constant expressions
java.lang.String	getEndSeparator() Returns a string with a begin separator when the expression value is a string or a char
java.lang.String	getName() Returns the name of the expression depending on its type
java.lang.String	getNewForRef(java.lang.String str) Gets the class to instantiate for references
void	getReferences(java.util.List list) Gets names the references that belong to an expression
java.lang.String	getResultSetMethod() Converts the expression to its value stored in the _theResult Java variable
Type	getResultType() Gets the result type of the expression
TransfInput	getTransf() Returns a the transfinput object
int	getType() Returns the type of the expression
java.lang.String	getValues(Transformation transf) Returns the string to append to the VALUES clause of Java code for ProjectionTerm.
void	getVarReferences(java.util.List list) Gets the Variable references and the expressions they are assigned to
java.lang.String	initValue() Converts the expression to its value stored in the _theResult Java variable
boolean	isException() Checks if the expression is an Exception
boolean	isFunctionCall() Checks if the expression is a function call
boolean	isIfStatement() Checks if the expression is an IF statement
boolean	isQuery() Checks if the expression is a Query
boolean	isReference() Checks if the expression is a reference
boolean	isVarDeclaration() Checks if the expression is a variable declaration
boolean	isVarReference() Checks if the expression is a reference to a variable
java.lang.Object	object() Gets the object stored in the expression
void	object(java.lang.Object object) Sets the object equal to a given object
static int	operator(java.lang.String op) Returns the type of the expression that corresponds to a given operator represented by a String
static java.lang.String	operatorName(int op, boolean toJava) Returns the operator name given the type of the expression
void	setArg(int index, Expression exp) Sets a given argument of the expression to a given expression
void	setResultType(Type type) Sets the result type to a given type
void	setType(int type) Sets the type of the expression to a given type
void	split(Expression varExp, Expression refExp) Splits into two expressions: one with variable references and another with references
void	splitVarsRefs(java.util.List varList, java.util.List refList) Splits into two lists: one with references and another with variable references
java.lang.String	toCode(boolean let, boolean where)
java.lang.String	toHtmlCode(boolean let, boolean where)
java.lang.String	toHtmlLet() Converts a let expression into its html code.
java.lang.String	toJava(boolean let, boolean varDecl, boolean where, boolean merging, boolean isToTable) Returns a string that corresponds to the equivalent Java code
java.lang.String	toJava(boolean let, boolean varDecl, boolean where, Transformation transf) Called when parameters of Transformation are relevant
java.lang.String	toSQL(boolean trigger, boolean outWhere, boolean isToTable) Returns a string that is SQL code
java.lang.String	toSQL(boolean trigger, boolean outWhere, Transformation transf) Called when parameters of Transformation are relevant
java.lang.String	toString() Converts the expression into a human read-able object.
java.lang.String	toStringLet() Converts a let expression into its code.
java.lang.String	toStringWhere() Converts a where expression into its code.

Methods inherited from class java.lang.Object

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

Field Detail

T_CONSTANT

public static final int T_CONSTANT

CONSTANTS

T_VAR_DECL

public static final int T_VAR_DECL

T_VAR_REF

public static final int T_VAR_REF

T_AS_REF

public static final int T_AS_REF

T_REFERENCE

public static final int T_REFERENCE

T_TRANSF

public static final int T_TRANSF

T_OUT_TRANSF

public static final int T_OUT_TRANSF

T_FUNCT_CALL

public static final int T_FUNCT_CALL

T_IF_STAT

public static final int T_IF_STAT

T_QUERY

public static final int T_QUERY

T_PROJECT

public static final int T_PROJECT

T_FROM

public static final int T_FROM

T_ORDER

public static final int T_ORDER

T_EQ

public static final int T_EQ

T_EQEQ

public static final int T_EQEQ

T_GT

public static final int T_GT

T_GE

public static final int T_GE

T_LT

public static final int T_LT

T_LE

public static final int T_LE

T_LIKE

public static final int T_LIKE

T_AND

public static final int T_AND

T_OR

public static final int T_OR

T_NOT

public static final int T_NOT

T_PLUS

public static final int T_PLUS

T_MINUS

public static final int T_MINUS

T_DIV

public static final int T_DIV

T_DEP

public static final int T_DEP

T_CHECK

public static final int T_CHECK

T_UNIQUE

public static final int T_UNIQUE

T_NOT_NULL

public static final int T_NOT_NULL

T_FOREIGN

public static final int T_FOREIGN

T_ASTERISC

public static final int T_ASTERISC

T_MULT

public static final int T_MULT

T_NE

public static final int T_NE

T_EXCEPTION

public static final int T_EXCEPTION

T_IMPLICIT

public static final int T_IMPLICIT

T_COMPOSED

public static final int T_COMPOSED

T_ALGO_CALL

public static final int T_ALGO_CALL

T_CONST_REF

public static final int T_CONST_REF

Constructor Detail

Expression

public Expression()

Constructor

Expression

public Expression(java.lang.Object obj,
                  int type,
                  int nb_args)

Constructor

Expression

public Expression(Expression exp)

Constructor

Method Detail

clone

public void clone(Expression exp)

Creates a copy of an expression

operator

public static int operator(java.lang.String op)

Returns the type of the expression that corresponds to a given operator represented by a String

operatorName

public static java.lang.String operatorName(int op,
                                            boolean toJava)

Returns the operator name given the type of the expression

getArg

public Expression getArg(int index)

Returns the argument of an expression given its index The argument of an expression is another expression

setArg

public void setArg(int index,
                   Expression exp)

Sets a given argument of the expression to a given expression

argsCount

public int argsCount()

Returns the number of arguments

getType

public int getType()

Returns the type of the expression

setType

public void setType(int type)

Sets the type of the expression to a given type

getResultType

public Type getResultType()

Gets the result type of the expression

setResultType

public void setResultType(Type type)

Sets the result type to a given type

object

public java.lang.Object object()

Gets the object stored in the expression

object

public void object(java.lang.Object object)

Sets the object equal to a given object

getName

public java.lang.String getName()

Returns the name of the expression depending on its type

equals

public boolean equals(java.lang.Object obj)

Redefines the equal() method for references

Overrides:

equals in class java.lang.Object

isVarDeclaration

public boolean isVarDeclaration()

Checks if the expression is a variable declaration

isReference

public boolean isReference()

Checks if the expression is a reference

isVarReference

public boolean isVarReference()

Checks if the expression is a reference to a variable

isFunctionCall

public boolean isFunctionCall()

Checks if the expression is a function call

isIfStatement

public boolean isIfStatement()

Checks if the expression is an IF statement

isQuery

public boolean isQuery()

Checks if the expression is a Query

isException

public boolean isException()

Checks if the expression is an Exception

getConstant

public Constant getConstant()

Returns a constant for constant expressions

getTransf

public TransfInput getTransf()

Returns a the transfinput object

toSQL

public java.lang.String toSQL(boolean trigger,
                              boolean outWhere,
                              Transformation transf)

Called when parameters of Transformation are relevant

toSQL

public java.lang.String toSQL(boolean trigger,
                              boolean outWhere,
                              boolean isToTable)

Returns a string that is SQL code

toJava

public java.lang.String toJava(boolean let,
                               boolean varDecl,
                               boolean where,
                               Transformation transf)
                        throws CatalogException,
                               ExpressionException,
                               AjaxTypeException

Called when parameters of Transformation are relevant

toJava

public java.lang.String toJava(boolean let,
                               boolean varDecl,
                               boolean where,
                               boolean merging,
                               boolean isToTable)
                        throws CatalogException,
                               ExpressionException,
                               AjaxTypeException

Returns a string that corresponds to the equivalent Java code

getResultSetMethod

public java.lang.String getResultSetMethod()

Converts the expression to its value stored in the _theResult Java variable

initValue

public java.lang.String initValue()

Converts the expression to its value stored in the _theResult Java variable

getNewForRef

public java.lang.String getNewForRef(java.lang.String str)
                              throws ExpressionException

Gets the class to instantiate for references

getEndSeparator

public java.lang.String getEndSeparator()

Returns a string with a begin separator when the expression value is a string or a char

getBeginSeparator

public java.lang.String getBeginSeparator()

Returns a string with a start separator when the expression value is a string or a char

getValues

public java.lang.String getValues(Transformation transf)
                           throws CatalogException,
                                  ExpressionException,
                                  AjaxTypeException

Returns the string to append to the VALUES clause of Java code for ProjectionTerm. The string is composed by the values of the attributes projected in the Select clause

splitVarsRefs

public void splitVarsRefs(java.util.List varList,
                          java.util.List refList)
                   throws ExpressionException

Splits into two lists: one with references and another with variable references

split

public void split(Expression varExp,
                  Expression refExp)
           throws ExpressionException

Splits into two expressions: one with variable references and another with references

getReferences

public void getReferences(java.util.List list)

Gets names the references that belong to an expression

getAsReferences

public void getAsReferences(java.util.List list)

Gets names of the set of As references that belongs to an expression

getVarReferences

public void getVarReferences(java.util.List list)

Gets the Variable references and the expressions they are assigned to

toStringLet

public java.lang.String toStringLet()

Converts a let expression into its code.

toHtmlLet

public java.lang.String toHtmlLet()

Converts a let expression into its html code.

toStringWhere

public java.lang.String toStringWhere()

Converts a where expression into its code.

toCode

public java.lang.String toCode(boolean let,
                               boolean where)

toHtmlCode

public java.lang.String toHtmlCode(boolean let,
                                   boolean where)

toString

public java.lang.String toString()

Converts the expression into a human read-able object.

Overrides:

toString in class java.lang.Object