Class TempRAFContainer
- java.lang.Object
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- org.apache.derby.impl.store.raw.data.BaseContainer
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- org.apache.derby.impl.store.raw.data.FileContainer
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- org.apache.derby.impl.store.raw.data.RAFContainer
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- org.apache.derby.impl.store.raw.data.TempRAFContainer
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- All Implemented Interfaces:
java.security.PrivilegedExceptionAction<java.lang.Object>
,Cacheable
,TypedFormat
,Lockable
class TempRAFContainer extends RAFContainer
needsSync is never true - DONE An exception never marks the store as corrupt clean() does not stubbify preAllocate() does nothing - DONE getFileName() returns a file in the tmp directory - DONE flushAll does nothing - DONE file descriptor is never synced
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Field Summary
Fields Modifier and Type Field Description protected int
inUseCount
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Fields inherited from class org.apache.derby.impl.store.raw.data.RAFContainer
fileData, needsSync
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Fields inherited from class org.apache.derby.impl.store.raw.data.FileContainer
allocCache, canUpdate, CHECKSUM_SIZE, CONTAINER_INFO_SIZE, containerCache, containerInfo, containerVersion, dataFactory, estimatedRowCount, FIRST_ALLOC_PAGE_NUMBER, FIRST_ALLOC_PAGE_OFFSET, firstAllocPageNumber, firstAllocPageOffset, formatIdInteger, initialPages, isDirty, lastLogInstant, minimumRecordSize, pageCache, pageSize, preDirty, SPACE_TRACE, spareSpace
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Fields inherited from class org.apache.derby.impl.store.raw.data.BaseContainer
identity, isCommittedDrop, isDropped, isReusableRecordId
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Constructor Summary
Constructors Constructor Description TempRAFContainer(BaseDataFileFactory factory)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Page
addPage(BaseContainerHandle handle, boolean isOverflow)
Add a page without locking the container, only one user will be accessing this table at a time.Cacheable
createIdentity(java.lang.Object key, java.lang.Object createParameter)
Create a new item.(package private) StorageFile
getFileName(ContainerKey identity, boolean stub, boolean errorOK, boolean tryAlternatePath)
boolean
isSingleUser()
Returns true if only a single handle is connected to this container.protected void
letGo(BaseContainerHandle handle)
Discontinue use of this container.protected int
preAllocate(long lastPreallocPagenum, int preAllocSize)
Preallocate page.protected StorageFile
privGetFileName(ContainerKey identity, boolean stub, boolean errorOK, boolean tryAlternatePath)
void
removeContainer(LogInstant instant, boolean leaveStub)
Remove the containerCacheable
setIdentity(java.lang.Object key)
Open the container.void
truncate(BaseContainerHandle handle)
protected boolean
use(BaseContainerHandle handle, boolean forUpdate, boolean droppedOK)
Lock the container and mark the container as in-use by this container handle.protected void
writePage(long pageNumber, byte[] pageData, boolean syncPage)
Write the page, if it's within range of the current page range of the container.-
Methods inherited from class org.apache.derby.impl.store.raw.data.RAFContainer
backupContainer, clean, closeContainer, createContainer, encryptOrDecryptContainer, flushAll, getRandomAccessFile, isDirty, openContainer, readPage, removeFile, reopenContainer, run, truncatePages, updatePageArray
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Methods inherited from class org.apache.derby.impl.store.raw.data.FileContainer
bumpContainerVersion, canUpdate, clearIdentity, clearPreallocThreshold, compressContainer, createIdent, deallocatePage, decryptPage, doPreAllocatePages, dropContainer, encryptPage, getAllocPage, getAnyPage, getContainerProperties, getContainerVersion, getContextService, getEmbryonicPage, getEmbryonicPage, getEncryptionBuffer, getEstimatedPageCount, getEstimatedRowCount, getFirstHeadPage, getHeadPage, getLastPageNumber, getLatchedPage, getMinimumRecordSize, getNextHeadPage, getPage, getPageForCompress, getPageForInsert, getPageSize, getReusableRecordIdSequenceNumber, getSpaceInfo, getSpareSpace, getTypeFormatId, incrementReusableRecordIdSequenceNumber, initPage, latchPage, logCreateContainerInfo, newPage, preDirty, prepareForBulkLoad, readHeader, reCreatePageForRedoRecovery, setDirty, setEstimatedRowCount, setIdent, trackUnfilledPage, updateEstimatedRowCount, writeAtOffset, writeHeader, writeHeader
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Methods inherited from class org.apache.derby.impl.store.raw.data.BaseContainer
compressContainer, fillInIdentity, getAllocPage, getAnyPage, getCommittedDropState, getContainerId, getContainerStatus, getDeallocLock, getDroppedState, getFirstPage, getIdentity, getNextPage, getSegmentId, isReusableRecordId, lockAttributes, lockerAlwaysCompatible, lockEvent, removePage, requestCompatible, setCommittedDropState, setDroppedState, setReusableRecordIdState, unlockEvent
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.apache.derby.iapi.services.cache.Cacheable
getIdentity
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Constructor Detail
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TempRAFContainer
TempRAFContainer(BaseDataFileFactory factory)
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Method Detail
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setIdentity
public Cacheable setIdentity(java.lang.Object key) throws StandardException
Description copied from class:FileContainer
Open the container.- Specified by:
setIdentity
in interfaceCacheable
- Overrides:
setIdentity
in classFileContainer
- Returns:
- a valid object if the container was successfully opened, null if it does not exist.
- Throws:
StandardException
- Standard Derby error policy- See Also:
Cacheable.setIdentity(java.lang.Object)
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createIdentity
public Cacheable createIdentity(java.lang.Object key, java.lang.Object createParameter) throws StandardException
Description copied from interface:Cacheable
Create a new item.Create a new item and set the identity of the object to represent it. The object will be in the No Identity state, ie. it will have just been created or clearIdentity() was just called.
The object must copy the information out of key, not just store a reference to key if the key is not immutable. After this call the expression getIdentity().equals(key) must return true.
If the class of the object needs to change (e.g. to support a different format) then the object should create a new object, call its initParameter() with the parameters the original object was called with, set its identity and return a reference to it. The cache manager will discard the reference to the old object.
If an exception is thrown the object must be left in the no-identity state.
MT - single thread required - Method must only be called be cache manager and the cache manager will guarantee only one thread can be calling it.- Specified by:
createIdentity
in interfaceCacheable
- Overrides:
createIdentity
in classFileContainer
- Returns:
- an object reference if the object can take on the identity, null otherwise.
- Throws:
StandardException
- Standard Derby error policy- See Also:
CacheManager.create(java.lang.Object, java.lang.Object)
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removeContainer
public void removeContainer(LogInstant instant, boolean leaveStub) throws StandardException
Description copied from class:RAFContainer
Remove the container- Overrides:
removeContainer
in classRAFContainer
leaveStub
- if true, leave a stub. If false, remove everything- Throws:
StandardException
- Standard Derby error policy- See Also:
RawContainerHandle.removeContainer(org.apache.derby.iapi.store.raw.log.LogInstant)
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preAllocate
protected int preAllocate(long lastPreallocPagenum, int preAllocSize)
Preallocate page. Since we don't sync when we write page anyway, no need to preallocate page.- Overrides:
preAllocate
in classRAFContainer
- Parameters:
lastPreallocPagenum
- the last preallocated page number as known by the allocation pagepreAllocSize
- try to preallocate this page number of pages. Since only the container knows how many pages are actually on disk, it may determine that certain number of pages that the allocation page thinks need to be preallocated is already allocated, in those case, act as if the preallocation is successful.- Returns:
- number of successfully preallocated page, or 0 if no page has been preallocated
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writePage
protected void writePage(long pageNumber, byte[] pageData, boolean syncPage) throws java.io.IOException, StandardException
Write the page, if it's within range of the current page range of the container. If we do write it then don't request that it be synced.- Overrides:
writePage
in classRAFContainer
- Throws:
StandardException
- Standard Derby error policyjava.io.IOException
- IO error accessing page
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getFileName
StorageFile getFileName(ContainerKey identity, boolean stub, boolean errorOK, boolean tryAlternatePath)
- Overrides:
getFileName
in classRAFContainer
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privGetFileName
protected StorageFile privGetFileName(ContainerKey identity, boolean stub, boolean errorOK, boolean tryAlternatePath)
- Overrides:
privGetFileName
in classRAFContainer
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addPage
public Page addPage(BaseContainerHandle handle, boolean isOverflow) throws StandardException
Add a page without locking the container, only one user will be accessing this table at a time.- Overrides:
addPage
in classBaseContainer
- Throws:
StandardException
- Standard Derby error policy
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truncate
public void truncate(BaseContainerHandle handle) throws StandardException
- Overrides:
truncate
in classBaseContainer
- Throws:
StandardException
- Standard Derby error policy
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use
protected boolean use(BaseContainerHandle handle, boolean forUpdate, boolean droppedOK) throws StandardException
Lock the container and mark the container as in-use by this container handle.- Overrides:
use
in classBaseContainer
- Parameters:
droppedOK
- if true, use this container even if it is dropped.,- Returns:
- true if the container can be used, false if it has been dropped since the lock was requested and droppedOK is not true.
- Throws:
StandardException
- I cannot be opened for update.
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letGo
protected void letGo(BaseContainerHandle handle)
Discontinue use of this container. Note that the unlockContainer call made from this method may not release any locks. The container lock may be held until the end of the transaction.- Overrides:
letGo
in classFileContainer
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isSingleUser
public boolean isSingleUser()
Returns true if only a single handle is connected to this container.
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