org.eigenbase.oj.util
Class OJSyntheticClass

java.lang.Object
  openjava.mop.OJClass
      org.eigenbase.oj.util.OJSyntheticClass

All Implemented Interfaces:

OJMember

public class OJSyntheticClass
extends OJClass

An OJSyntheticClass is a class declaration for intermediate results in expressions. It is created implicitly while expressions are being compiled.

Two synthetic classes are identical if their attributes are of the same number, type, and order.

Synthetic classes are created in two ways: OJClassMap.createProject(OJClass, OJClass[], String[]) creates the type of a select clause, and OJClassMap.createJoin(OJClass, OJClass[]) creates the type of a join. The semantics are slightly different: projection classes have field names, but join classes do not; two join classes with the same member types are equivalent, but two distinct projection classes may have the same set of attributes.

Field Summary

(package private) OJClass[]	classes
(package private) ClassDeclaration	decl
(package private) String	description
static String	FIELD_PREFIX
static String	JOIN_CLASS_PREFIX
static String	PROJECT_CLASS_PREFIX

Fields inherited from interface openjava.mop.OJMember

DECLARED, PUBLIC

Constructor Summary

OJSyntheticClass(Environment env, OJClass declarer, OJClass[] classes, String[] fieldNames, ClassDeclaration decl, String description, boolean defineValueConstructor)
Called only from OJClassMap methods.

Method Summary

static void	addMembers(ClassDeclaration outerClassDecl, OJClass[] classes) Adds declarations of a set of classes classes as inner classes of a class declaration outerClassDecl.
static void	addMethod(ClassDeclaration classDecl, StatementList statementList, String name, String[] parameterNames, OJClass[] parameterTypes, OJClass returnType) Creates a method in a class.
boolean	equals(Object o)
static int	getOrdinal(String fieldName, boolean fail) Converts a field name back to an ordinal.
int	hashCode()
static boolean	isJoinClass(OJClass clazz)
static String	makeField(int ordinal)
String	toString()

Methods inherited from class openjava.mop.OJClass

addClass, addConstructor, addField, addInterface, addMethod, arrayOf, expandAllocation, expandArrayAccess, expandArrayAllocation, expandAssignmentExpression, expandCastedExpression, expandCastExpression, expandExpression, expandFieldRead, expandFieldWrite, expandMethodCall, expandTypeName, expandVariableDeclaration, forClass, forName, forParseTree, getAcceptableConstructor, getAcceptableMethod, getAllClasses, getAllField, getAllFields, getAllMethod, getAllMethods, getAllMethods, getByteCode, getClasses, getClasses, getCompatibleJavaClass, getComponentType, getConstructor, getConstructor, getConstructors, getConstructors, getDeclaredClasses, getDeclaredConstructor, getDeclaredConstructors, getDeclaredField, getDeclaredFields, getDeclaredMethod, getDeclaredMethods, getDeclaringClass, getDeclSuffixRule, getEnvironment, getField, getField, getFields, getFields, getInheritableClasses, getInheritableClasses, getInheritableConstructors, getInheritableFields, getInheritableFields, getInheritableMethods, getInheritableMethods, getInheritedClasses, getInheritedFields, getInheritedMethods, getInterfaces, getMetaInfo, getMetaInfoElements, getMetaInfoKeys, getMethod, getMethod, getMethods, getMethods, getModifiers, getName, getPackage, getSimpleName, getSourceCode, getSuffix, getSuperclass, getTypeSuffixRule, isAlterable, isArray, isAssignableFrom, isExecutable, isInSamePackage, isInterface, isPrimitive, isPrimitiveWrapper, isRegisteredKeyword, isRegisteredModifier, makeCopy, makeExpression, makeExpression, makeStatement, makeStatement, makeStatementList, makeStatementList, primitiveWrapper, putMetaInfo, removeClass, removeConstructor, removeField, removeMethod, resolveException, resolveException, setInterfaces, setName, setSuperclass, signature, translateDefinition, translateDefinition, unwrappedPrimitive, waitTranslation, writeMetaInfo

Methods inherited from class java.lang.Object

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

Field Detail

JOIN_CLASS_PREFIX

public static final String JOIN_CLASS_PREFIX

See Also:

Constant Field Values

PROJECT_CLASS_PREFIX

public static final String PROJECT_CLASS_PREFIX

See Also:

Constant Field Values

FIELD_PREFIX

public static final String FIELD_PREFIX

See Also:

Constant Field Values

description

String description

classes

OJClass[] classes

decl

ClassDeclaration decl

Constructor Detail

OJSyntheticClass

OJSyntheticClass(Environment env,
                 OJClass declarer,
                 OJClass[] classes,
                 String[] fieldNames,
                 ClassDeclaration decl,
                 String description,
                 boolean defineValueConstructor)

Called only from OJClassMap methods.

Method Detail

toString

public String toString()

Overrides:

toString in class OJClass

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

addMembers

public static void addMembers(ClassDeclaration outerClassDecl,
                              OJClass[] classes)

Adds declarations of a set of classes classes as inner classes of a class declaration outerClassDecl. Declarations which are already present are not added again.

addMethod

public static void addMethod(ClassDeclaration classDecl,
                             StatementList statementList,
                             String name,
                             String[] parameterNames,
                             OJClass[] parameterTypes,
                             OJClass returnType)

Creates a method in a class.

getOrdinal

public static int getOrdinal(String fieldName,
                             boolean fail)

Converts a field name back to an ordinal. For example, getOrdinal("$f2") returns 2. If fieldName is not valid, throws an error if "fail" is true, otherwise returns -1.

makeField

public static String makeField(int ordinal)

isJoinClass

public static boolean isJoinClass(OJClass clazz)