Type (DataNucleus Core 3.2.10 API)

java.lang.Object
- org.datanucleus.asm.Type

```
public class Type
extends Object
```
A Java field or method type. This class can be used to make it easier to manipulate type and method descriptors.

Author:

Eric Bruneton, Chris Nokleberg

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`ARRAY` The sort of array reference types.
`static int`	`BOOLEAN` The sort of the `boolean` type.
`static Type`	`BOOLEAN_TYPE` The `boolean` type.
`static int`	`BYTE` The sort of the `byte` type.
`static Type`	`BYTE_TYPE` The `byte` type.
`static int`	`CHAR` The sort of the `char` type.
`static Type`	`CHAR_TYPE` The `char` type.
`static int`	`DOUBLE` The sort of the `double` type.
`static Type`	`DOUBLE_TYPE` The `double` type.
`static int`	`FLOAT` The sort of the `float` type.
`static Type`	`FLOAT_TYPE` The `float` type.
`static int`	`INT` The sort of the `int` type.
`static Type`	`INT_TYPE` The `int` type.
`static int`	`LONG` The sort of the `long` type.
`static Type`	`LONG_TYPE` The `long` type.
`static int`	`METHOD` The sort of method types.
`static int`	`OBJECT` The sort of object reference types.
`static int`	`SHORT` The sort of the `short` type.
`static Type`	`SHORT_TYPE` The `short` type.
`static int`	`VOID` The sort of the `void` type.
`static Type`	`VOID_TYPE` The `void` type.

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`equals(Object o)` Tests if the given object is equal to this type.
`int`	`getArgumentsAndReturnSizes()` Returns the size of the arguments and of the return value of methods of this type.
`static int`	`getArgumentsAndReturnSizes(String desc)` Computes the size of the arguments and of the return value of a method.
`Type[]`	`getArgumentTypes()` Returns the argument types of methods of this type.
`static Type[]`	`getArgumentTypes(Method method)` Returns the Java types corresponding to the argument types of the given method.
`static Type[]`	`getArgumentTypes(String methodDescriptor)` Returns the Java types corresponding to the argument types of the given method descriptor.
`String`	`getClassName()` Returns the binary name of the class corresponding to this type.
`static String`	`getConstructorDescriptor(Constructor<?> c)` Returns the descriptor corresponding to the given constructor.
`String`	`getDescriptor()` Returns the descriptor corresponding to this Java type.
`static String`	`getDescriptor(Class<?> c)` Returns the descriptor corresponding to the given Java type.
`int`	`getDimensions()` Returns the number of dimensions of this array type.
`Type`	`getElementType()` Returns the type of the elements of this array type.
`String`	`getInternalName()` Returns the internal name of the class corresponding to this object or array type.
`static String`	`getInternalName(Class<?> c)` Returns the internal name of the given class.
`static String`	`getMethodDescriptor(Method m)` Returns the descriptor corresponding to the given method.
`static String`	`getMethodDescriptor(Type returnType, Type... argumentTypes)` Returns the descriptor corresponding to the given argument and return types.
`static Type`	`getMethodType(String methodDescriptor)` Returns the Java type corresponding to the given method descriptor.
`static Type`	`getMethodType(Type returnType, Type... argumentTypes)` Returns the Java method type corresponding to the given argument and return types.
`static Type`	`getObjectType(String internalName)` Returns the Java type corresponding to the given internal name.
`int`	`getOpcode(int opcode)` Returns a JVM instruction opcode adapted to this Java type.
`Type`	`getReturnType()` Returns the return type of methods of this type.
`static Type`	`getReturnType(Method method)` Returns the Java type corresponding to the return type of the given method.
`static Type`	`getReturnType(String methodDescriptor)` Returns the Java type corresponding to the return type of the given method descriptor.
`int`	`getSize()` Returns the size of values of this type.
`int`	`getSort()` Returns the sort of this Java type.
`static Type`	`getType(Class<?> c)` Returns the Java type corresponding to the given class.
`static Type`	`getType(Constructor<?> c)` Returns the Java method type corresponding to the given constructor.
`static Type`	`getType(Method m)` Returns the Java method type corresponding to the given method.
`static Type`	`getType(String typeDescriptor)` Returns the Java type corresponding to the given type descriptor.
`int`	`hashCode()` Returns a hash code value for this type.
`String`	`toString()` Returns a string representation of this type.

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

- Field Detail
  - VOID
```
public static final int VOID
```
    The sort of the void type. See getSort.
    
    See Also:
    Constant Field Values
  - BOOLEAN
```
public static final int BOOLEAN
```
    The sort of the boolean type. See getSort.
    
    See Also:
    Constant Field Values
  - CHAR
```
public static final int CHAR
```
    The sort of the char type. See getSort.
    
    See Also:
    Constant Field Values
  - BYTE
```
public static final int BYTE
```
    The sort of the byte type. See getSort.
    
    See Also:
    Constant Field Values
  - SHORT
```
public static final int SHORT
```
    The sort of the short type. See getSort.
    
    See Also:
    Constant Field Values
  - INT
```
public static final int INT
```
    The sort of the int type. See getSort.
    
    See Also:
    Constant Field Values
  - FLOAT
```
public static final int FLOAT
```
    The sort of the float type. See getSort.
    
    See Also:
    Constant Field Values
  - LONG
```
public static final int LONG
```
    The sort of the long type. See getSort.
    
    See Also:
    Constant Field Values
  - DOUBLE
```
public static final int DOUBLE
```
    The sort of the double type. See getSort.
    
    See Also:
    Constant Field Values
  - ARRAY
```
public static final int ARRAY
```
    The sort of array reference types. See getSort.
    
    See Also:
    Constant Field Values
  - OBJECT
```
public static final int OBJECT
```
    The sort of object reference types. See getSort.
    
    See Also:
    Constant Field Values
  - METHOD
```
public static final int METHOD
```
    The sort of method types. See getSort.
    
    See Also:
    Constant Field Values
  - VOID_TYPE
```
public static final Type VOID_TYPE
```
    The void type.
  - BOOLEAN_TYPE
```
public static final Type BOOLEAN_TYPE
```
    The boolean type.
  - CHAR_TYPE
```
public static final Type CHAR_TYPE
```
    The char type.
  - BYTE_TYPE
```
public static final Type BYTE_TYPE
```
    The byte type.
  - SHORT_TYPE
```
public static final Type SHORT_TYPE
```
    The short type.
  - INT_TYPE
```
public static final Type INT_TYPE
```
    The int type.
  - FLOAT_TYPE
```
public static final Type FLOAT_TYPE
```
    The float type.
  - LONG_TYPE
```
public static final Type LONG_TYPE
```
    The long type.
  - DOUBLE_TYPE
```
public static final Type DOUBLE_TYPE
```
    The double type.
- Method Detail
  - getType
```
public static Type getType(String typeDescriptor)
```
    Returns the Java type corresponding to the given type descriptor.
    
    Parameters:
    typeDescriptor - a field or method type descriptor.
    
    Returns:
    the Java type corresponding to the given type descriptor.
  - getObjectType
```
public static Type getObjectType(String internalName)
```
    Returns the Java type corresponding to the given internal name.
    
    Parameters:
    internalName - an internal name.
    
    Returns:
    the Java type corresponding to the given internal name.
  - getMethodType
```
public static Type getMethodType(String methodDescriptor)
```
    Returns the Java type corresponding to the given method descriptor. Equivalent to Type.getType(methodDescriptor).
    
    Parameters:
    methodDescriptor - a method descriptor.
    
    Returns:
    the Java type corresponding to the given method descriptor.
  - getMethodType
```
public static Type getMethodType(Type returnType,
                 Type... argumentTypes)
```
    Returns the Java method type corresponding to the given argument and return types.
    
    Parameters:
    returnType - the return type of the method.
    argumentTypes - the argument types of the method.
    
    Returns:
    the Java type corresponding to the given argument and return types.
  - getType
```
public static Type getType(Class<?> c)
```
    Returns the Java type corresponding to the given class.
    
    Parameters:
    c - a class.
    
    Returns:
    the Java type corresponding to the given class.
  - getType
```
public static Type getType(Constructor<?> c)
```
    Returns the Java method type corresponding to the given constructor.
    
    Parameters:
    c - a Constructor object.
    
    Returns:
    the Java method type corresponding to the given constructor.
  - getType
```
public static Type getType(Method m)
```
    Returns the Java method type corresponding to the given method.
    
    Parameters:
    m - a Method object.
    
    Returns:
    the Java method type corresponding to the given method.
  - getArgumentTypes
```
public static Type[] getArgumentTypes(String methodDescriptor)
```
    Returns the Java types corresponding to the argument types of the given method descriptor.
    
    Parameters:
    methodDescriptor - a method descriptor.
    
    Returns:
    the Java types corresponding to the argument types of the given method descriptor.
  - getArgumentTypes
```
public static Type[] getArgumentTypes(Method method)
```
    Returns the Java types corresponding to the argument types of the given method.
    
    Parameters:
    method - a method.
    
    Returns:
    the Java types corresponding to the argument types of the given method.
  - getReturnType
```
public static Type getReturnType(String methodDescriptor)
```
    Returns the Java type corresponding to the return type of the given method descriptor.
    
    Parameters:
    methodDescriptor - a method descriptor.
    
    Returns:
    the Java type corresponding to the return type of the given method descriptor.
  - getReturnType
```
public static Type getReturnType(Method method)
```
    Returns the Java type corresponding to the return type of the given method.
    
    Parameters:
    method - a method.
    
    Returns:
    the Java type corresponding to the return type of the given method.
  - getArgumentsAndReturnSizes
```
public static int getArgumentsAndReturnSizes(String desc)
```
    Computes the size of the arguments and of the return value of a method.
    
    Parameters:
    desc - the descriptor of a method.
    
    Returns:
    the size of the arguments of the method (plus one for the implicit this argument), argSize, and the size of its return value, retSize, packed into a single int i = (argSize << 2) | retSize (argSize is therefore equal to i >> 2, and retSize to i & 0x03).
  - getSort
```
public int getSort()
```
    Returns the sort of this Java type.
    
    Returns:
    VOID, BOOLEAN, CHAR, BYTE, SHORT, INT, FLOAT, LONG, DOUBLE, ARRAY, OBJECT or METHOD.
  - getDimensions
```
public int getDimensions()
```
    Returns the number of dimensions of this array type. This method should only be used for an array type.
    
    Returns:
    the number of dimensions of this array type.
  - getElementType
```
public Type getElementType()
```
    Returns the type of the elements of this array type. This method should only be used for an array type.
    
    Returns:
    Returns the type of the elements of this array type.
  - getClassName
```
public String getClassName()
```
    Returns the binary name of the class corresponding to this type. This method must not be used on method types.
    
    Returns:
    the binary name of the class corresponding to this type.
  - getInternalName
```
public String getInternalName()
```
    Returns the internal name of the class corresponding to this object or array type. The internal name of a class is its fully qualified name (as returned by Class.getName(), where '.' are replaced by '/'. This method should only be used for an object or array type.
    
    Returns:
    the internal name of the class corresponding to this object type.
  - getArgumentTypes
```
public Type[] getArgumentTypes()
```
    Returns the argument types of methods of this type. This method should only be used for method types.
    
    Returns:
    the argument types of methods of this type.
  - getReturnType
```
public Type getReturnType()
```
    Returns the return type of methods of this type. This method should only be used for method types.
    
    Returns:
    the return type of methods of this type.
  - getArgumentsAndReturnSizes
```
public int getArgumentsAndReturnSizes()
```
    Returns the size of the arguments and of the return value of methods of this type. This method should only be used for method types.
    
    Returns:
    the size of the arguments (plus one for the implicit this argument), argSize, and the size of the return value, retSize, packed into a single int i = (argSize << 2) | retSize (argSize is therefore equal to i >> 2, and retSize to i & 0x03).
  - getDescriptor
```
public String getDescriptor()
```
    Returns the descriptor corresponding to this Java type.
    
    Returns:
    the descriptor corresponding to this Java type.
  - getMethodDescriptor
```
public static String getMethodDescriptor(Type returnType,
                         Type... argumentTypes)
```
    Returns the descriptor corresponding to the given argument and return types.
    
    Parameters:
    returnType - the return type of the method.
    argumentTypes - the argument types of the method.
    
    Returns:
    the descriptor corresponding to the given argument and return types.
  - getInternalName
```
public static String getInternalName(Class<?> c)
```
    Returns the internal name of the given class. The internal name of a class is its fully qualified name, as returned by Class.getName(), where '.' are replaced by '/'.
    
    Parameters:
    c - an object or array class.
    
    Returns:
    the internal name of the given class.
  - getDescriptor
```
public static String getDescriptor(Class<?> c)
```
    Returns the descriptor corresponding to the given Java type.
    
    Parameters:
    c - an object class, a primitive class or an array class.
    
    Returns:
    the descriptor corresponding to the given class.
  - getConstructorDescriptor
```
public static String getConstructorDescriptor(Constructor<?> c)
```
    Returns the descriptor corresponding to the given constructor.
    
    Parameters:
    c - a Constructor object.
    
    Returns:
    the descriptor of the given constructor.
  - getMethodDescriptor
```
public static String getMethodDescriptor(Method m)
```
    Returns the descriptor corresponding to the given method.
    
    Parameters:
    m - a Method object.
    
    Returns:
    the descriptor of the given method.
  - getSize
```
public int getSize()
```
    Returns the size of values of this type. This method must not be used for method types.
    
    Returns:
    the size of values of this type, i.e., 2 for long and double, 0 for void and 1 otherwise.
  - getOpcode
```
public int getOpcode(int opcode)
```
    Returns a JVM instruction opcode adapted to this Java type. This method must not be used for method types.
    
    Parameters:
    opcode - a JVM instruction opcode. This opcode must be one of ILOAD, ISTORE, IALOAD, IASTORE, IADD, ISUB, IMUL, IDIV, IREM, INEG, ISHL, ISHR, IUSHR, IAND, IOR, IXOR and IRETURN.
    
    Returns:
    an opcode that is similar to the given opcode, but adapted to this Java type. For example, if this type is float and opcode is IRETURN, this method returns FRETURN.
  - equals
```
public boolean equals(Object o)
```
    Tests if the given object is equal to this type.
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    o - the object to be compared to this type.
    
    Returns:
    true if the given object is equal to this type.
  - hashCode
```
public int hashCode()
```
    Returns a hash code value for this type.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    a hash code value for this type.
  - toString
```
public String toString()
```
    Returns a string representation of this type.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    the descriptor of this type.

Class Type

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

VOID

BOOLEAN

CHAR

BYTE

SHORT

INT

FLOAT

LONG

DOUBLE

ARRAY

OBJECT

METHOD

VOID_TYPE

BOOLEAN_TYPE

CHAR_TYPE

BYTE_TYPE

SHORT_TYPE

INT_TYPE

FLOAT_TYPE

LONG_TYPE

DOUBLE_TYPE

Method Detail

getType

getObjectType

getMethodType

getMethodType

getType

getType

getType

getArgumentTypes

getArgumentTypes

getReturnType

getReturnType

getArgumentsAndReturnSizes

getSort

getDimensions

getElementType

getClassName

getInternalName

getArgumentTypes

getReturnType

getArgumentsAndReturnSizes

getDescriptor

getMethodDescriptor

getInternalName

getDescriptor

getConstructorDescriptor

getMethodDescriptor

getSize

getOpcode

equals

hashCode

toString