com.sleepycat.persist.impl
Class PrimitiveArrayFormat

java.lang.Object
  extended by com.sleepycat.persist.impl.Format
      extended by com.sleepycat.persist.impl.PrimitiveArrayFormat
All Implemented Interfaces:
Reader, RawType, Serializable

public class PrimitiveArrayFormat
extends Format

An array of primitives having one dimension. Multidimensional arrays are handled by ObjectArrayFormat.

Author:
Mark Hayes
See Also:
Serialized Form

Field Summary
 
Fields inherited from class com.sleepycat.persist.impl.Format
ID_BIGDEC, ID_BIGINT, ID_BOOL, ID_BOOL_W, ID_BYTE, ID_BYTE_W, ID_CHAR, ID_CHAR_W, ID_DATE, ID_DOUBLE, ID_DOUBLE_W, ID_FLOAT, ID_FLOAT_W, ID_INT, ID_INT_W, ID_LONG, ID_LONG_W, ID_NULL, ID_NUMBER, ID_OBJECT, ID_PREDEFINED, ID_SHORT, ID_SHORT_W, ID_SIMPLE_MAX, ID_SIMPLE_MIN, ID_STRING
 
Constructor Summary
PrimitiveArrayFormat(Class type)
           
 
Method Summary
(package private)  void collectRelatedFormats(Catalog catalog, Map<String,Format> newFormats)
          Calls catalog.createFormat for formats that this format depends on, or that should also be persistent.
(package private)  Object convertRawObject(Catalog catalog, boolean rawAccess, RawObject rawObject, IdentityHashMap converted)
          Converts a RawObject to a current class object and adds the converted pair to the converted map.
(package private)  void copySecMultiKey(RecordInput input, Format keyFormat, Set results)
          Called after skipToSecKey() to copy the data bytes of an array or collection (XXX_TO_MANY) key field.
(package private)  boolean evolve(Format newFormat, Evolver evolver)
          Called for an existing format that may not equal the current format for the same class.
 Format getComponentType()
          Returns the array component type, or null if this is not an array type.
 int getDimensions()
          Returns the number of array dimensions, or zero if this is not an array type.
(package private)  void initialize(Catalog catalog, int initVersion)
          Initializes an uninitialized format, initializing its related formats (superclass formats and array component formats) first.
 boolean isArray()
          Returns whether this is an array type.
(package private)  Object newArray(int len)
          Creates an array of the format's class of the given length, as if Array.newInstance(getType(), len) were called.
 Object newInstance(EntityInput input, boolean rawAccess)
          Creates a new instance of the target class using its default constructor.
 Object readObject(Object o, EntityInput input, boolean rawAccess)
          Called after newInstance() to read the rest of the data bytes and fill in the object contents.
(package private)  void skipContents(RecordInput input)
          Skips over the object's contents, as if readObject() were called, but without returning an object.
(package private)  void writeObject(Object o, EntityOutput output, boolean rawAccess)
          Writes a given instance of the target class to the output data bytes.
 
Methods inherited from class com.sleepycat.persist.impl.Format
areNestedRefsProhibited, copySecKey, evolveMetadata, getCatalog, getClassMetadata, getClassName, getEntityFormat, getEntityMetadata, getEnumConstants, getEvolveNeeded, getExistingType, getFields, getId, getLatestVersion, getPreviousVersion, getProxiedFormat, getReader, getSequenceKeyFormat, getSuperFormat, getSuperType, getType, getVersion, getWrapperFormat, initializeIfNeeded, initializeReader, isAssignableTo, isCurrentVersion, isDeleted, isEntity, isEnum, isInitialized, isModelClass, isNew, isPredefined, isPriKeyNullOrZero, isPrimitive, isSameClass, isSimple, migrateFromBeta, nullifySecKey, readPriKey, setDeleted, setEvolveNeeded, setId, setLatestVersion, setProxiedFormat, setReader, setSuperFormat, setUnused, skipToSecKey, toString, writePriKey
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

PrimitiveArrayFormat

PrimitiveArrayFormat(Class type)
Method Detail

isArray

public boolean isArray()
Description copied from interface: RawType
Returns whether this is an array type. Raw value arrays are represented as RawObject instances.

If true is returned, the array component type is returned by RawType.getComponentType() and the number of array dimensions is returned by RawType.getDimensions().

If false is returned, then this is a complex type, an enum type (see RawType.isEnum()), or a simple type (see RawType.isSimple()).

Specified by:
isArray in interface RawType
Overrides:
isArray in class Format

getDimensions

public int getDimensions()
Description copied from interface: RawType
Returns the number of array dimensions, or zero if this is not an array type.

Specified by:
getDimensions in interface RawType
Overrides:
getDimensions in class Format

getComponentType

public Format getComponentType()
Description copied from interface: RawType
Returns the array component type, or null if this is not an array type.

Specified by:
getComponentType in interface RawType
Overrides:
getComponentType in class Format

collectRelatedFormats

void collectRelatedFormats(Catalog catalog,
                           Map<String,Format> newFormats)
Description copied from class: Format
Calls catalog.createFormat for formats that this format depends on, or that should also be persistent.

Specified by:
collectRelatedFormats in class Format

initialize

void initialize(Catalog catalog,
                int initVersion)
Description copied from class: Format
Initializes an uninitialized format, initializing its related formats (superclass formats and array component formats) first.

Specified by:
initialize in class Format

newArray

Object newArray(int len)
Description copied from class: Format
Creates an array of the format's class of the given length, as if Array.newInstance(getType(), len) were called. Formats implement this method for specific classes, or call the accessor, to avoid the reflection overhead of Array.newInstance.

Specified by:
newArray in class Format

newInstance

public Object newInstance(EntityInput input,
                          boolean rawAccess)
Description copied from class: Format
Creates a new instance of the target class using its default constructor. Normally this creates an empty object, and readObject() is called next to fill in the contents. This is done in two steps to allow the instance to be registered by EntityInput before reading the contents. This allows the fields in an object or a nested object to refer to the parent object in a graph. Alternatively, this method may read all or the first portion of the data, rather than that being done by readObject(). This is required for simple types and enums, where the object cannot be created without reading the data. In these cases, there is no possibility that the parent object will be referenced by the child object in the graph. It should not be done in other cases, or the graph references may not be maintained faithfully. Is public only in order to implement the Reader interface. Note that this method should only be called directly in raw conversion mode or during conversion of an old format. Normally it should be called via the getReader method and the Reader interface.

Specified by:
newInstance in interface Reader
Specified by:
newInstance in class Format

readObject

public Object readObject(Object o,
                         EntityInput input,
                         boolean rawAccess)
Description copied from class: Format
Called after newInstance() to read the rest of the data bytes and fill in the object contents. If the object was read completely by newInstance(), this method does nothing. Is public only in order to implement the Reader interface. Note that this method should only be called directly in raw conversion mode or during conversion of an old format. Normally it should be called via the getReader method and the Reader interface.

Specified by:
readObject in interface Reader
Specified by:
readObject in class Format

writeObject

void writeObject(Object o,
                 EntityOutput output,
                 boolean rawAccess)
Description copied from class: Format
Writes a given instance of the target class to the output data bytes. This is the complement of the newInstance()/readObject() pair.

Specified by:
writeObject in class Format

convertRawObject

Object convertRawObject(Catalog catalog,
                        boolean rawAccess,
                        RawObject rawObject,
                        IdentityHashMap converted)
Description copied from class: Format
Converts a RawObject to a current class object and adds the converted pair to the converted map.

Overrides:
convertRawObject in class Format

skipContents

void skipContents(RecordInput input)
Description copied from class: Format
Skips over the object's contents, as if readObject() were called, but without returning an object. Used for extracting secondary key bytes without having to instantiate the object. For reference types, the format ID is read just before calling this method, so this method is responsible for skipping everything following the format ID.

Specified by:
skipContents in class Format

copySecMultiKey

void copySecMultiKey(RecordInput input,
                     Format keyFormat,
                     Set results)
Description copied from class: Format
Called after skipToSecKey() to copy the data bytes of an array or collection (XXX_TO_MANY) key field.

Overrides:
copySecMultiKey in class Format

evolve

boolean evolve(Format newFormat,
               Evolver evolver)
Description copied from class: Format
Called for an existing format that may not equal the current format for the same class.

If this method returns true, then it must have determined that the old and new formats are equal, and it must have called either Evolver.useOldFormat or useEvolvedFormat. If this method returns false, then it must have determined that the old format could not be evolved to the new format, and it must have called Evolver.addInvalidMutation, addMissingMutation or addEvolveError.

Specified by:
evolve in class Format


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