java.lang.Object
- com.sun.jdo.spi.persistence.support.ejb.ejbqlc.TypeSupport

```
public class TypeSupport
extends Object
```
Helper class to support type info access. A type info is statically an object, internally the helper uses the type name as type info. The helper uses a model instance to access meta model info and uses a NameMapper to map EJB names to JDO names and vice versa.

Author:

Michael Bouschen, Shing Wai Chan

Field Summary

Fields
Modifier and Type	Field	Description
`static Object`	`bigDecimalType`	Represents the type java.math.BigDecimal.
`static Object`	`bigIntegerType`	Represents the type java.math.BigInteger.
`static Object`	`booleanClassType`	Represents the wrapper class type boolean.
`static Object`	`booleanType`	Represents the primitive type boolean.
`static Object`	`byteClassType`	Represents the wrapper class type byte.
`static Object`	`byteType`	Represents the primitive type byte.
`static Object`	`characterClassType`	Represents the wrapper class type char.
`static Object`	`charType`	Represents the primitive type char.
`protected static Set`	`dateTimeTypes`	Set of names of date and time types.
`static Object`	`doubleClassType`	Represents the wrapper class type double.
`static Object`	`doubleType`	Represents the primitive type double.
`static Object`	`errorType`	Represents the internal error type.
`static Object`	`floatClassType`	Represents the wrapper class type float.
`static Object`	`floatType`	Represents the primitive type float.
`static Object`	`integerClassType`	Represents the wrapper class type int.
`static Object`	`intType`	Represents the primitive type int.
`static Object`	`longClassType`	Represents the wrapper class type long.
`static Object`	`longType`	Represents the primitive type long.
`protected Model`	`model`	Meta data access.
`protected static ResourceBundle`	`msgs`	I18N support.
`protected NameMapper`	`nameMapper`	Name mapping EJB <-> JDO.
`protected static Set`	`numericTypes`	Set of names of numeric types.
`protected static Set`	`numericWrapperTypes`	Set of names of numeric wrapper classes.
`static Object`	`shortClassType`	Represents the wrapper class type short.
`static Object`	`shortType`	Represents the primitive type short.
`static Object`	`stringType`	Represents the type java.lang.String.

Constructor Summary

Constructors
Constructor	Description
`TypeSupport(Model model, NameMapper nameMapper)`	Creates a new TypeSupport using the specified model instance to access meta data and the specified nameMapper for EJB <-> JDO name mapping.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static Object`	`binaryNumericPromotion(Object left, Object right)`	Implements binary numeric promotion as defined in the Java Language Specification section 5.6.2
`String`	`getAbstractSchemaForTypeInfo(Object typeInfo)`	Returns the typeInfo (the ejb name) for the specified abstract schema.
`Object`	`getAvgReturnType(Object type)`	Return JDO QL return type for Avg function for a given type.
`Object`	`getElementType(Object fieldInfo)`	Returns the type info of the element type if the specified field info denotes a collection relationship.
`Object`	`getFieldInfo(Object typeInfo, String fieldName)`	Returns the field info for the specified field of the specified type.
`Object`	`getFieldType(Object typeInfo, String fieldName)`	Returns the type info for the type of the given field.
`Object`	`getMinMaxReturnType(Object type)`	Return JDO QL return type for Min/Max function for a given type.
`String`	`getPCForTypeInfo(Object typeInfo)`	Gets the name of the persistence-capable class which corresponds to the specified typeInfo (assuming an ejb name).
`static Object`	`getPrimitiveType(Object type)`	Returns the type info for a primitive type.
`Object`	`getSumReturnType(Object type)`	Return JDO QL return type for Sum function for a given type.
`Object`	`getTypeInfo(Class clazz)`	The method returns a type info by type name by class object.
`Object`	`getTypeInfo(String name)`	The method returns a type info by type name.
`Object`	`getTypeInfoForAbstractSchema(String abstractSchema)`	Returns the typeInfo (the ejb name) for the specified abstract schema.
`static String`	`getTypeName(Object type)`	Returns the type name for a specified type info.
`static Object`	`getWrapperType(Object type)`	Returns the type info for a wrapper class type.
`boolean`	`hasLocalInterface(Object typeInfo)`	Returns `true` if the bean with the specified ejb name has a local interface.
`boolean`	`hasRemoteInterface(Object typeInfo)`	Returns `true` if the bean with the specified ejb name has a remote interface.
`static boolean`	`isBooleanType(Object type)`	Returns `true` if type is boolean or java.lang.Boolean
`static boolean`	`isCharType(Object type)`	Returns `true` if type is char or java.lang.Character
`boolean`	`isCollectionType(Object type)`	Returns `true` if type is a collection type.
`boolean`	`isCompatibleWith(Object left, Object right)`	Implements type compatibility.
`boolean`	`isDateTimeType(Object type)`	Returns `true` if type is a date or time type
`static boolean`	`isDoubleType(Object type)`	Returns `true` if type is double or java.lang.Double.
`boolean`	`isEjbName(Object typeInfo)`	Returns `true` if the specified type info denotes an ejb name.
`boolean`	`isEjbOrInterfaceName(Object typeInfo)`	Returns `true` if the specified type info denotes an ejb name or the name of a local interface or the name of a remote interface.
`static boolean`	`isErrorType(Object type)`	Returns `true` if type denotes the error type.
`static boolean`	`isFloatingPointType(Object type)`	Returns `true` if type is a floating point type or wrapper class of a floating point type.
`static boolean`	`isIntType(Object type)`	Returns `true` if type is int or java.lang.Integer
`boolean`	`isLocalInterface(Object typeInfo)`	Returns `true` if the specified type info denotes a local interface.
`boolean`	`isLocalInterfaceOfEjb(Object typeInfo, String ejbName)`	Returns `true` if the specified type info denotes the local interface of the bean with the specified ejb name.
`static boolean`	`isNumberType(Object type)`	Returns `true` if type is a NumerType, which means it is either a numeric primitive or a numeric wrapper class.
`static boolean`	`isNumericType(Object type)`	Returns `true` if type is a primitive numeric type such as byte, int etc.
`static boolean`	`isNumericWrapperType(Object type)`	Returns `true` if type is a wrapper class of a primitive numeric type such as java.lang.Byte, java.lang.Integer etc.
`boolean`	`isOrderableType(Object type)`	Returns `true` if type is an orderable type
`boolean`	`isRelationship(Object fieldInfo)`	Returns `true` if the specified field info denotes a relationship field.
`boolean`	`isRemoteInterface(Object typeInfo)`	Returns `true` if the specified type info denotes a remote interface.
`boolean`	`isRemoteInterfaceOfEjb(Object typeInfo, String ejbName)`	Returns `true` if the specified type info denotes the remote interface of the bean with the specified ejb name.
`static boolean`	`isStringType(Object type)`	Returns `true` if type denotes java.lang.String.
`static Object`	`unaryNumericPromotion(Object type)`	Implements unray numeric promotion as defined in the Java Language Specification section 5.6.1

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - errorType
```
public static final Object errorType
```
    Represents the internal error type.
  - booleanType
```
public static final Object booleanType
```
    Represents the primitive type boolean.
  - byteType
```
public static final Object byteType
```
    Represents the primitive type byte.
  - shortType
```
public static final Object shortType
```
    Represents the primitive type short.
  - charType
```
public static final Object charType
```
    Represents the primitive type char.
  - intType
```
public static final Object intType
```
    Represents the primitive type int.
  - longType
```
public static final Object longType
```
    Represents the primitive type long.
  - floatType
```
public static final Object floatType
```
    Represents the primitive type float.
  - doubleType
```
public static final Object doubleType
```
    Represents the primitive type double.
  - booleanClassType
```
public static final Object booleanClassType
```
    Represents the wrapper class type boolean.
  - byteClassType
```
public static final Object byteClassType
```
    Represents the wrapper class type byte.
  - shortClassType
```
public static final Object shortClassType
```
    Represents the wrapper class type short.
  - characterClassType
```
public static final Object characterClassType
```
    Represents the wrapper class type char.
  - integerClassType
```
public static final Object integerClassType
```
    Represents the wrapper class type int.
  - longClassType
```
public static final Object longClassType
```
    Represents the wrapper class type long.
  - floatClassType
```
public static final Object floatClassType
```
    Represents the wrapper class type float.
  - doubleClassType
```
public static final Object doubleClassType
```
    Represents the wrapper class type double.
  - stringType
```
public static final Object stringType
```
    Represents the type java.lang.String.
  - bigDecimalType
```
public static final Object bigDecimalType
```
    Represents the type java.math.BigDecimal.
  - bigIntegerType
```
public static final Object bigIntegerType
```
    Represents the type java.math.BigInteger.
  - numericTypes
```
protected static final Set numericTypes
```
    Set of names of numeric types.
  - numericWrapperTypes
```
protected static final Set numericWrapperTypes
```
    Set of names of numeric wrapper classes.
  - dateTimeTypes
```
protected static final Set dateTimeTypes
```
    Set of names of date and time types.
  - model
```
protected Model model
```
    Meta data access.
  - nameMapper
```
protected NameMapper nameMapper
```
    Name mapping EJB <-> JDO.
  - msgs
```
protected static final ResourceBundle msgs
```
    I18N support.
- Constructor Detail
  - TypeSupport
```
public TypeSupport(Model model,
                   NameMapper nameMapper)
```
    Creates a new TypeSupport using the specified model instance to access meta data and the specified nameMapper for EJB <-> JDO name mapping.
- Method Detail
  - getTypeInfo
```
public Object getTypeInfo(String name)
```
    The method returns a type info by type name. If the type name denotes a class the name should be fully qualified. The method uses the type name as type info.
  - getTypeInfo
```
public Object getTypeInfo(Class clazz)
```
    The method returns a type info by type name by class object.
  - isErrorType
```
public static boolean isErrorType(Object type)
```
    Returns true if type denotes the error type.
  - isBooleanType
```
public static boolean isBooleanType(Object type)
```
    Returns true if type is boolean or java.lang.Boolean
  - isCharType
```
public static boolean isCharType(Object type)
```
    Returns true if type is char or java.lang.Character
  - isIntType
```
public static boolean isIntType(Object type)
```
    Returns true if type is int or java.lang.Integer
  - isDoubleType
```
public static boolean isDoubleType(Object type)
```
    Returns true if type is double or java.lang.Double.
  - isNumericType
```
public static boolean isNumericType(Object type)
```
    Returns true if type is a primitive numeric type such as byte, int etc.
  - isNumericWrapperType
```
public static boolean isNumericWrapperType(Object type)
```
    Returns true if type is a wrapper class of a primitive numeric type such as java.lang.Byte, java.lang.Integer etc.
  - isNumberType
```
public static boolean isNumberType(Object type)
```
    Returns true if type is a NumerType, which means it is either a numeric primitive or a numeric wrapper class.
  - isFloatingPointType
```
public static boolean isFloatingPointType(Object type)
```
    Returns true if type is a floating point type or wrapper class of a floating point type.
  - isStringType
```
public static boolean isStringType(Object type)
```
    Returns true if type denotes java.lang.String.
  - isCollectionType
```
public boolean isCollectionType(Object type)
```
    Returns true if type is a collection type.
  - isDateTimeType
```
public boolean isDateTimeType(Object type)
```
    Returns true if type is a date or time type
  - isOrderableType
```
public boolean isOrderableType(Object type)
```
    Returns true if type is an orderable type
  - getPrimitiveType
```
public static Object getPrimitiveType(Object type)
```
    Returns the type info for a primitive type. The method returns errorType if the specified type is not a primitive type.
  - getWrapperType
```
public static Object getWrapperType(Object type)
```
    Returns the type info for a wrapper class type. The method returns errorType if the specified type is not a wrapper class type.
  - binaryNumericPromotion
```
public static Object binaryNumericPromotion(Object left,
                                            Object right)
```
    Implements binary numeric promotion as defined in the Java Language Specification section 5.6.2
  - unaryNumericPromotion
```
public static Object unaryNumericPromotion(Object type)
```
    Implements unray numeric promotion as defined in the Java Language Specification section 5.6.1
  - isCompatibleWith
```
public boolean isCompatibleWith(Object left,
                                Object right)
```
    Implements type compatibility. The method returns true if left is compatible with right. This is equivalent to rightClass.isAssignableFrom(leftClass). Note, the method does not support inheritance.
  - getTypeName
```
public static String getTypeName(Object type)
```
    Returns the type name for a specified type info.
  - getTypeInfoForAbstractSchema
```
public Object getTypeInfoForAbstractSchema(String abstractSchema)
```
    Returns the typeInfo (the ejb name) for the specified abstract schema.
  - getAbstractSchemaForTypeInfo
```
public String getAbstractSchemaForTypeInfo(Object typeInfo)
```
    Returns the typeInfo (the ejb name) for the specified abstract schema.
  - getFieldType
```
public Object getFieldType(Object typeInfo,
                           String fieldName)
```
    Returns the type info for the type of the given field.
  - getFieldInfo
```
public Object getFieldInfo(Object typeInfo,
                           String fieldName)
```
    Returns the field info for the specified field of the specified type. The field info is opaque for the caller. Methods isRelationship(java.lang.Object) and getElementType(java.lang.Object) allow to get details for a given field info.
  - isRelationship
```
public boolean isRelationship(Object fieldInfo)
```
    Returns true if the specified field info denotes a relationship field.
  - getElementType
```
public Object getElementType(Object fieldInfo)
```
    Returns the type info of the element type if the specified field info denotes a collection relationship. Otherwise it returns null.
  - getPCForTypeInfo
```
public String getPCForTypeInfo(Object typeInfo)
```
    Gets the name of the persistence-capable class which corresponds to the specified typeInfo (assuming an ejb name). The method returs the type name of the specified typeInfo, it the typeInfo does not denote an ejb-name (e.g. a local or remote interface).
  - isEjbName
```
public boolean isEjbName(Object typeInfo)
```
    Returns true if the specified type info denotes an ejb name.
  - isEjbOrInterfaceName
```
public boolean isEjbOrInterfaceName(Object typeInfo)
```
    Returns true if the specified type info denotes an ejb name or the name of a local interface or the name of a remote interface.
  - isRemoteInterfaceOfEjb
```
public boolean isRemoteInterfaceOfEjb(Object typeInfo,
                                      String ejbName)
```
    Returns true if the specified type info denotes the remote interface of the bean with the specified ejb name.
  - isLocalInterfaceOfEjb
```
public boolean isLocalInterfaceOfEjb(Object typeInfo,
                                     String ejbName)
```
    Returns true if the specified type info denotes the local interface of the bean with the specified ejb name.
  - isRemoteInterface
```
public boolean isRemoteInterface(Object typeInfo)
```
    Returns true if the specified type info denotes a remote interface.
  - isLocalInterface
```
public boolean isLocalInterface(Object typeInfo)
```
    Returns true if the specified type info denotes a local interface.
  - hasRemoteInterface
```
public boolean hasRemoteInterface(Object typeInfo)
```
    Returns true if the bean with the specified ejb name has a remote interface.
  - hasLocalInterface
```
public boolean hasLocalInterface(Object typeInfo)
```
    Returns true if the bean with the specified ejb name has a local interface.
  - getSumReturnType
```
public Object getSumReturnType(Object type)
```
    Return JDO QL return type for Sum function for a given type.
    
    Parameters:
    
    type - is a number data type
  - getAvgReturnType
```
public Object getAvgReturnType(Object type)
```
    Return JDO QL return type for Avg function for a given type.
    
    Parameters:
    
    type - is a number data type
  - getMinMaxReturnType
```
public Object getMinMaxReturnType(Object type)
```
    Return JDO QL return type for Min/Max function for a given type.
    
    Parameters:
    
    type - is an orderable data type

Class TypeSupport

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

errorType

booleanType

byteType

shortType

charType

intType

longType

floatType

doubleType

booleanClassType

byteClassType

shortClassType

characterClassType

integerClassType

longClassType

floatClassType

doubleClassType

stringType

bigDecimalType

bigIntegerType

numericTypes

numericWrapperTypes

dateTimeTypes

model

nameMapper

msgs

Constructor Detail

TypeSupport

Method Detail

getTypeInfo

getTypeInfo

isErrorType

isBooleanType

isCharType

isIntType

isDoubleType

isNumericType

isNumericWrapperType

isNumberType

isFloatingPointType

isStringType

isCollectionType

isDateTimeType

isOrderableType

getPrimitiveType

getWrapperType

binaryNumericPromotion

unaryNumericPromotion

isCompatibleWith

getTypeName

getTypeInfoForAbstractSchema

getAbstractSchemaForTypeInfo

getFieldType

getFieldInfo

isRelationship

getElementType

getPCForTypeInfo

isEjbName

isEjbOrInterfaceName

isRemoteInterfaceOfEjb

isLocalInterfaceOfEjb

isRemoteInterface

isLocalInterface

hasRemoteInterface

hasLocalInterface

getSumReturnType

getAvgReturnType

getMinMaxReturnType