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java.lang.Objectcom.sleepycat.persist.impl.Format
com.sleepycat.persist.impl.ObjectArrayFormat
public class ObjectArrayFormat
An array of objects having a specified number of dimensions. All
multidimensional arrays are handled by this class, since even a primitive
array of more than one dimension is an array of objects, where the component
objects may be primitive arrays. The PrimitiveArrayFormat
class
handles primitive arrays of one dimension only.
In this class, and PrimitiveArrayFormat
, we resort to using
reflection to allocate multidimensional arrays. If there is a need for it,
reflection could be avoided in the future by generating code as new array
formats are encountered.
Field Summary |
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Fields inherited from class com.sleepycat.persist.impl.Format |
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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_OBJECT, ID_PREDEFINED, ID_SHORT, ID_SHORT_W, ID_SIMPLE_MAX, ID_SIMPLE_MIN, ID_STRING |
Constructor Summary | |
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ObjectArrayFormat(Class type)
|
Method Summary | |
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(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) void |
copySecMultiKey(EntityInput input,
Format keyFormat,
Set results)
Called after skipToSecKey() to copy the data bytes of an array or collection (XXX_TO_MANY) key field. |
boolean |
equals(Object other)
Used to compare the current version and an old version, to determine whether class evolution is needed. |
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)
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) boolean |
isAssignableTo(Format format)
Called by EntityOutput in rawAccess mode to determine whether an object type is allowed to be assigned to a given field 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. |
(package private) Object |
newInstance(EntityInput input,
boolean rawAccess)
Creates a new instance of the target class using its default constructor. |
(package private) void |
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(EntityInput 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 |
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copySecKey, evolveTo, getClassMetadata, getClassName, getEntityFormat, getEntityMetadata, getEnumConstants, getFields, getId, getProxiedFormat, getSuperFormat, getSuperType, getType, getVersion, getWrapperFormat, initializeIfNeeded, isCurrentVersion, isEntity, isEnum, isModelClass, isPredefined, isPriKeyNullOrZero, isPrimitive, isSimple, nullifySecKey, readPriKey, setId, setProxiedFormat, setSuperFormat, skipToSecKey, writePriKey |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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ObjectArrayFormat(Class type)
Method Detail |
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public boolean isArray()
RawType
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()
).
isArray
in interface RawType
isArray
in class Format
public int getDimensions()
RawType
getDimensions
in interface RawType
getDimensions
in class Format
public Format getComponentType()
RawType
getComponentType
in interface RawType
getComponentType
in class Format
void collectRelatedFormats(Catalog catalog, Map<String,Format> newFormats)
Format
collectRelatedFormats
in class Format
void initialize(Catalog catalog)
Format
initialize
in class Format
boolean isAssignableTo(Format format)
Format
isAssignableTo
in class Format
Object newArray(int len)
Format
newArray
in class Format
Object newInstance(EntityInput input, boolean rawAccess)
Format
newInstance
in class Format
void writeObject(Object o, EntityOutput output, boolean rawAccess)
Format
writeObject
in class Format
void readObject(Object o, EntityInput input, boolean rawAccess)
Format
readObject
in class Format
void skipContents(EntityInput input)
Format
skipContents
in class Format
void copySecMultiKey(EntityInput input, Format keyFormat, Set results)
Format
copySecMultiKey
in class Format
public boolean equals(Object other)
Format
equals
in class Format
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