saffron.util
Class RelEnvironment

java.lang.Object
  |
  +--openjava.mop.Environment
        |
        +--saffron.util.RelEnvironment

public class RelEnvironment

extends Environment

RelEnvironment defines the set of variables available to a relational expression.

Nested Class Summary

Nested classes inherited from class openjava.mop.Environment

Environment.BasicVariableInfo, Environment.VariableInfo

Field Summary

(package private) Rel	rel
private static Variable	var0
private static Variable	var1

Fields inherited from class openjava.mop.Environment

parent

Constructor Summary

RelEnvironment(Environment parent, Rel rel)

Method Summary

void	bindVariable(String name, Environment.VariableInfo info) Binds the name of a variable to information about the variable, including its class.
static int	getInputOrdinal(String name) Returns the ordinal of the input represented by the variable name, or -1 if it does not represent an input.
String	getPackage() Gets the package name.
Environment.VariableInfo	lookupBind(String name) Looks up a binded type of the given variable or field name.
OJClass	lookupClass(String name) Looks a class object up.
static FieldAccess	makeFieldAccess(int ordinal, int field) Constructs a reference to the fieldth field of the ordinalth input.
static String	makeName(int ordinal) Constructs the name for the ordinalth input.
static Variable	makeReference(int ordinal)
void	record(String name, OJClass clazz) Records a class object.
String	toString()

Methods inherited from class openjava.mop.Environment

bindVariable, currentClassName, getClassEnvironmentParent, getGlobalEnvironment, getParent, isBind, isQualifiedName, isRegisteredModifier, lookupClass, recordMemberClass, toPackageName, toQualifiedName, toSimpleName

Methods inherited from class java.lang.Object

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

Field Detail

rel

Rel rel

var0

private static final Variable var0

var1

private static final Variable var1

Constructor Detail

RelEnvironment

public RelEnvironment(Environment parent,
                      Rel rel)

Method Detail

toString

public String toString()

Specified by:

toString in class Environment

getPackage

public String getPackage()

Description copied from class: Environment

Gets the package name.

Overrides:

getPackage in class Environment

lookupClass

public OJClass lookupClass(String name)

Description copied from class: Environment

Looks a class object up.

Overrides:

lookupClass in class Environment

Parameters:

name - the name of the fully-qualified name of the class looked for

getInputOrdinal

public static int getInputOrdinal(String name)

Returns the ordinal of the input represented by the variable name, or -1 if it does not represent an input.

lookupBind

public Environment.VariableInfo lookupBind(String name)

Description copied from class: Environment

Looks up a binded type of the given variable or field name.

Overrides:

lookupBind in class Environment

Parameters:

name - the fully-qualified name of the class

makeName

public static String makeName(int ordinal)

Constructs the name for the ordinalth input. For example, makeName(0) returns "$input0".

makeReference

public static Variable makeReference(int ordinal)

makeFieldAccess

public static FieldAccess makeFieldAccess(int ordinal,
                                          int field)

Constructs a reference to the field^th field of the ordinal^th input.

record

public void record(String name,
                   OJClass clazz)

Description copied from class: Environment

Records a class object.

Specified by:

record in class Environment

Parameters:

name - the fully-qualified name of the class

clazz - the class object associated with that name

bindVariable

public void bindVariable(String name,
                         Environment.VariableInfo info)

Description copied from class: Environment

Binds the name of a variable to information about the variable, including its class.

Specified by:

bindVariable in class Environment