AccessCode (OpenJPA Parent POM 2.4.1 API)

java.lang.Object
- org.apache.openjpa.meta.AccessCode

```
public class AccessCode
extends Object
```
Represents access styles for members of a class and field through a 5-bit integer.
The bits designate following aspects of access style being used at class level:
Bit position 0 (UNKNOWN): generally 0. All bits as zero represent that no access style has been set. 1 denotes that the class has no property at all and its access can not be determined.
Bit position 1 (FIELD): Field based access is default
Bit position 2 (PROPERTY): Property based access is default
Bit position 3 (EXPLICIT): whether explicit or implicit Explicit access style allows members to use mixed access style, implicit access style does not
Bit position 4 (MIXED): whether all members are using the same access style or not. Can only be set if EXPLICT bit is set. If set, then bit 1 or 2 denotes what is the default.
The same bits designate following aspects of access style being used at field level:
Bit position 0 (UNKNOWN): always 0. All bits as zero represent that no access style has been set.
Bit position 1 (FIELD): Field based access is default
Bit position 2 (PROPERTY): Property based access is default
Bit position 3 (EXPLICIT): whether the access is explicit or implicit
Bit position 4 (MIXED): not used

Validation Rules for the bits:
1. Only one of the position 1 (FIELD) and 2 (PROPERTY) can be set. A single bit is not used for legacy reason to cope with the access constants used in ClassMetaData which this class now refactors to address new behaviors specified in JPA 2.0 specification.
2. if position 3 (EXPLICIT) is set then one of position 1 (FIELD) and 2 (PROPERTY) must be set.
3. If position 4 (MIXED) is set then the set position of either FIELD or PROPERTY designates the default access of the member.

Since:: 2.0.0
Author:: Pinaki Poddar

Field Summary

Fields
Modifier and Type Field and Description

static int EMPTY

static int EXPLICIT

static int FIELD

static int MIXED

static int PROPERTY

static int UNKNOWN

Fields
Modifier and Type	Field and Description
`static int`	`EMPTY`
`static int`	`EXPLICIT`
`static int`	`FIELD`
`static int`	`MIXED`
`static int`	`PROPERTY`
`static int`	`UNKNOWN`

Constructor Summary

Constructors
Constructor and Description

AccessCode()

Constructors
Constructor and Description
`AccessCode()`

Method Summary

Methods
Modifier and Type	Method and Description
`static int`	`getMixedCode(int cCode, int fCode)`
`static boolean`	`isCompatibleSuper(int subCode, int superCode)` Affirms if the sub class access type is compatible with super class access style.
`static boolean`	`isEmpty(ClassMetaData meta)`
`static boolean`	`isEmpty(int code)`
`static boolean`	`isExplicit(int code)`
`static boolean`	`isField(ClassMetaData meta)`
`static boolean`	`isField(FieldMetaData meta)`
`static boolean`	`isField(int code)`
`static boolean`	`isMixed(int code)` Affirms if the given code designates that members can use both FIELD and PROPERTY based access.
`static boolean`	`isProperty(ClassMetaData meta)`
`static boolean`	`isProperty(FieldMetaData meta)`
`static boolean`	`isProperty(int code)`
`static boolean`	`isUnknown(ClassMetaData meta)`
`static boolean`	`isUnknown(FieldMetaData meta)`
`static boolean`	`isUnknown(int code)`
`static boolean`	`isValidClassCode(int code)` Affirms if the given code is valid.
`static boolean`	`isValidFieldCode(int code)`
`static int`	`mergeFieldCode(ClassMetaData meta, FieldMetaData fmd, int fCode)`
`static int`	`mergeFieldCode(int cCode, int fCode)` Merges the field access type with the class access type provided such merge is valid.
`static String`	`toClassString(int code)`
`static int`	`toFieldCode(int code)`
`static String`	`toFieldString(int code)`

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

Field Detail

UNKNOWN
```
public static int UNKNOWN
```

EMPTY
```
public static int EMPTY
```

FIELD
```
public static int FIELD
```

PROPERTY
```
public static int PROPERTY
```

EXPLICIT
```
public static int EXPLICIT
```

MIXED
```
public static int MIXED
```

Constructor Detail
- AccessCode
```
public AccessCode()
```

Method Detail

isValidClassCode

public static boolean isValidClassCode(int code)

Affirms if the given code is valid.

isValidFieldCode

public static boolean isValidFieldCode(int code)

isMixed
```
public static boolean isMixed(int code)
```
Affirms if the given code designates that members can use both FIELD and PROPERTY based access.

isExplicit

public static boolean isExplicit(int code)

isProperty

public static boolean isProperty(int code)

isField

public static boolean isField(int code)

isUnknown

public static boolean isUnknown(int code)

isEmpty

public static boolean isEmpty(int code)

isField

public static boolean isField(ClassMetaData meta)

isProperty

public static boolean isProperty(ClassMetaData meta)

isUnknown

public static boolean isUnknown(ClassMetaData meta)

isEmpty

public static boolean isEmpty(ClassMetaData meta)

isField

public static boolean isField(FieldMetaData meta)

isProperty

public static boolean isProperty(FieldMetaData meta)

isUnknown

public static boolean isUnknown(FieldMetaData meta)

isCompatibleSuper
```
public static boolean isCompatibleSuper(int subCode,
                        int superCode)
```
Affirms if the sub class access type is compatible with super class access style.

mergeFieldCode

public static int mergeFieldCode(ClassMetaData meta,
                 FieldMetaData fmd,
                 int fCode)

mergeFieldCode
```
public static int mergeFieldCode(int cCode,
                 int fCode)
```
Merges the field access type with the class access type provided such merge is valid.

Returns:
the modified class access code.

Throws:

IllegalStateException - if the given codes are not compatible

getMixedCode

public static int getMixedCode(int cCode,
               int fCode)

toFieldCode

public static int toFieldCode(int code)

toFieldString

public static String toFieldString(int code)

toClassString

public static String toClassString(int code)

Class AccessCode

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

UNKNOWN

EMPTY

FIELD

PROPERTY

EXPLICIT

MIXED

Constructor Detail

AccessCode

Method Detail

isValidClassCode

isValidFieldCode

isMixed

isExplicit

isProperty

isField

isUnknown

isEmpty

isField

isProperty

isUnknown

isEmpty

isField

isProperty

isUnknown

isCompatibleSuper

mergeFieldCode

mergeFieldCode

getMixedCode

toFieldCode

toFieldString

toClassString