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java.lang.Objectorg.apache.derby.impl.store.raw.data.PageBasicOperation
org.apache.derby.impl.store.raw.data.LogicalPageOperation
org.apache.derby.impl.store.raw.data.InsertOperation
public final class InsertOperation
Represents an insert of a record onto a page.
Page.insertAtSlot(int, java.lang.Object[], org.apache.derby.iapi.services.io.FormatableBitSet, org.apache.derby.iapi.store.access.conglomerate.LogicalUndo, byte, int)
,
Serialized FormFormat ID | LOGOP_INSERT the formatId is written by FormatIdOutputStream when this object is written out by writeObject |
Purpose | insert a row onto a page |
Upgrade | |
Disk Layout | LogicalPageOperation the superclass doMeSlot(CompressedInt) which slot to operate on insertFlat(byte) to undo with purge or with delete OptionalData The after image of the row to be inserted. |
Field Summary | |
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protected int |
doMeSlot
|
protected byte |
insertFlag
|
protected ByteArray |
preparedLog
|
protected int |
startColumn
next column that need to be inserted. |
Fields inherited from class org.apache.derby.impl.store.raw.data.LogicalPageOperation |
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recordId, undo |
Fields inherited from class org.apache.derby.impl.store.raw.data.PageBasicOperation |
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containerHdl, foundHere, page |
Fields inherited from interface org.apache.derby.iapi.store.raw.Loggable |
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ABORT, BI_LOG, CHECKSUM, COMMIT, COMPENSATION, FILE_RESOURCE, FIRST, LAST, PREPARE, RAWSTORE, XA_NEEDLOCK |
Constructor Summary | |
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InsertOperation()
|
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InsertOperation(RawTransaction t,
BasePage page,
int slot,
int recordId,
java.lang.Object[] row,
FormatableBitSet validColumns,
LogicalUndo undo,
byte insertFlag,
int startColumn,
boolean isLongColumn,
int realStartColumn,
DynamicByteArrayOutputStream logBuffer,
int realSpaceOnPage,
int overflowThreshold)
|
Method Summary | |
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void |
doMe(Transaction xact,
LogInstant instant,
LimitObjectInput in)
Apply the change indicated by this operation and optional data. |
int |
getNextStartColumn()
|
ByteArray |
getPreparedLog()
the default for optional data is set to null. |
int |
getTypeFormatId()
Return my format identifier. |
void |
readExternal(java.io.ObjectInput in)
Read this in |
void |
restoreLoggedRow(java.lang.Object[] row,
LimitObjectInput in)
Restore the row stored in the optional data of the log record. |
void |
restoreMe(Transaction xact,
BasePage undoPage,
LogInstant CLRinstant,
LimitObjectInput in)
restore the before image of the page |
java.lang.String |
toString()
DEBUG: Print self. |
void |
undoMe(Transaction xact,
BasePage undoPage,
int undoRecordId,
LogInstant CLRInstant,
LimitObjectInput in)
Undo the insert by simply marking the just inserted record as deleted. |
void |
writeExternal(java.io.ObjectOutput out)
Write this out. |
private void |
writeOptionalDataToBuffer(RawTransaction t,
DynamicByteArrayOutputStream logBuffer,
java.lang.Object[] row,
FormatableBitSet validColumns,
boolean isLongColumn,
int realStartColumn,
int realSpaceOnPage,
int overflowThreshold)
Writes out the row that is to be inserted as the optional data. |
Methods inherited from class org.apache.derby.impl.store.raw.data.LogicalPageOperation |
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generateUndo, getContainer, getRecordHandle, reclaimPrepareLocks, resetRecordHandle |
Methods inherited from class org.apache.derby.impl.store.raw.data.PageBasicOperation |
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findpage, getPage, getPageForRedoRecovery, getPageId, getPageVersion, group, needsRedo, releaseResource, resetPageNumber |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface org.apache.derby.iapi.store.raw.Loggable |
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group, needsRedo, releaseResource |
Field Detail |
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protected int doMeSlot
protected byte insertFlag
protected transient int startColumn
protected transient ByteArray preparedLog
Constructor Detail |
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public InsertOperation(RawTransaction t, BasePage page, int slot, int recordId, java.lang.Object[] row, FormatableBitSet validColumns, LogicalUndo undo, byte insertFlag, int startColumn, boolean isLongColumn, int realStartColumn, DynamicByteArrayOutputStream logBuffer, int realSpaceOnPage, int overflowThreshold) throws StandardException
StandardException
public InsertOperation()
Method Detail |
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public void writeExternal(java.io.ObjectOutput out) throws java.io.IOException
writeExternal
in interface java.io.Externalizable
writeExternal
in class LogicalPageOperation
java.io.IOException
- error writing to log streampublic void readExternal(java.io.ObjectInput in) throws java.io.IOException, java.lang.ClassNotFoundException
readExternal
in interface java.io.Externalizable
readExternal
in class LogicalPageOperation
java.io.IOException
- error reading from log stream
java.lang.ClassNotFoundException
- log stream corruptedpublic int getTypeFormatId()
public void doMe(Transaction xact, LogInstant instant, LimitObjectInput in) throws StandardException, java.io.IOException
Loggable
The available() method of in indicates how much data can be read, i.e. how much was originally written.
xact
- the Transactioninstant
- the log instant of this operationin
- optional data
java.io.IOException
- Can be thrown by any of the methods of ObjectInput.
StandardException
- Standard Derby policy.Loggable.doMe(org.apache.derby.iapi.store.raw.Transaction, org.apache.derby.iapi.store.raw.log.LogInstant, org.apache.derby.iapi.services.io.LimitObjectInput)
public void undoMe(Transaction xact, BasePage undoPage, int undoRecordId, LogInstant CLRInstant, LimitObjectInput in) throws StandardException, java.io.IOException
undoMe
in class LogicalPageOperation
xact
- the Transaction doing the rollbackundoPage
- the page to rollback changes onundoRecordId
- the recordId to rollback changes onCLRInstant
- the log instant of this (PageUndo) operationin
- optional data for the rollback operation
java.io.IOException
- Can be thrown by any of the methods of ObjectInput.
StandardException
- Standard Derby policy.LogicalPageOperation.undoMe(org.apache.derby.iapi.store.raw.Transaction, org.apache.derby.impl.store.raw.data.BasePage, int, org.apache.derby.iapi.store.raw.log.LogInstant, org.apache.derby.iapi.services.io.LimitObjectInput)
public void restoreLoggedRow(java.lang.Object[] row, LimitObjectInput in) throws StandardException, java.io.IOException
row
- an IN/OUT parameter, caller passed in the row with
the correct column number and type, the log operation will restore the
row with the optional data stored in the log record.
java.io.IOException
- error reading from log stream
StandardException
- Standard Derby error policyLogicalUndo
public void restoreMe(Transaction xact, BasePage undoPage, LogInstant CLRinstant, LimitObjectInput in) throws StandardException, java.io.IOException
restoreMe
in class PageBasicOperation
xact
- the Transaction doing the rollbackundoPage
- the page to rollback changes onCLRinstant
- the log instant of this (PageUndo) operationin
- optional data for the rollback operation
StandardException
- Standard Derby Error Policy
java.io.IOException
- problem reading the complete log record from the
input streampublic ByteArray getPreparedLog()
PageBasicOperation
getPreparedLog
in interface Loggable
getPreparedLog
in class PageBasicOperation
public int getNextStartColumn()
private void writeOptionalDataToBuffer(RawTransaction t, DynamicByteArrayOutputStream logBuffer, java.lang.Object[] row, FormatableBitSet validColumns, boolean isLongColumn, int realStartColumn, int realSpaceOnPage, int overflowThreshold) throws StandardException, java.io.IOException
java.io.IOException
- Can be thrown by any of the methods of ObjectOutput
StandardException
- Standard Derby policy.public java.lang.String toString()
toString
in class PageBasicOperation
|
Built on Thu 2010-12-23 20:49:13+0000, from revision ??? | ||||||||
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