org.apache.derby.impl.store.access.btree.index
Class B2I_10_3

java.lang.Object
  org.apache.derby.iapi.types.DataType
      org.apache.derby.impl.store.access.conglomerate.GenericConglomerate
          org.apache.derby.impl.store.access.btree.BTree
              org.apache.derby.impl.store.access.btree.index.B2I
                  org.apache.derby.impl.store.access.btree.index.B2I_10_3

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Comparable, Formatable, Storable, TypedFormat, Conglomerate, DataValueDescriptor, Orderable

public class B2I_10_3
extends B2I

Class used to instantiate 10.3 version of the B2I object. This class implements the format of the B2I object as existed in the 10.3 release of Derby. In subsequent releases the format was enhanced to store the uniqueWithDuplicateNulls attribute of the index. For upgrade purpose all 10.3 and prior versions are assumed to have false for the uniqueWithDuplicateNulls attribute. This class reads and writes the V4 version to/from disk and reads/writes current in-memory version of the data structure.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.derby.impl.store.access.btree.index.B2I

baseConglomerateId, FORMAT_NUMBER, rowLocationColumn

Fields inherited from class org.apache.derby.impl.store.access.btree.BTree

ascDescInfo, collation_ids, conglom_format_id, format_ids, hasCollatedTypes, id, nKeyFields, PROPERTY_ALLOWDUPLICATES, PROPERTY_MAX_ROWS_PER_PAGE_PARAMETER, PROPERTY_NKEYFIELDS, PROPERTY_NUNIQUECOLUMNS, PROPERTY_PARENTLINKS, PROPERTY_UNIQUE_WITH_DUPLICATE_NULLS, ROOTPAGEID

Fields inherited from interface org.apache.derby.iapi.types.DataValueDescriptor

UNKNOWN_LOGICAL_LENGTH

Fields inherited from interface org.apache.derby.iapi.types.Orderable

ORDER_OP_EQUALS, ORDER_OP_GREATEROREQUALS, ORDER_OP_GREATERTHAN, ORDER_OP_LESSOREQUALS, ORDER_OP_LESSTHAN

Constructor Summary

B2I_10_3()

Method Summary

int	getTypeFormatId() Return my format identifier.
void	writeExternal(java.io.ObjectOutput out) Store the stored representation of the column value in the stream.

Methods inherited from class org.apache.derby.impl.store.access.btree.index.B2I

compressConglomerate, create, defragmentConglomerate, drop, estimateMemoryUsage, fetchMaxOnBTree, getBtreeLockingPolicy, getStaticCompiledConglomInfo, load, lockTable, open, openScan, openStoreCost, purgeConglomerate, readExternal, writeExternal_v10_2, writeExternal_v10_3

Methods inherited from class org.apache.derby.impl.store.access.btree.BTree

addColumn, create, createTemplate, getContainerid, getDynamicCompiledConglomInfo, getId, isNull, isTemporary, isUnique, isUniqueWithDuplicateNulls, restoreToNull, setUniqueWithDuplicateNulls, toString

Methods inherited from class org.apache.derby.impl.store.access.conglomerate.GenericConglomerate

cloneValue, compare, getLength, getNewNull, getObject, getString, getTypeName, hasCollatedColumns, setFrom, setValueFromResultSet

Methods inherited from class org.apache.derby.iapi.types.DataType

checkHostVariable, cloneHolder, coalesce, compare, compare, compare, compareTo, dataTypeConversion, equals, equals, flip, getBoolean, getByte, getBytes, getDate, getDouble, getFloat, getInt, getLong, getShort, getStream, getTime, getTimestamp, getTraceString, greaterOrEquals, greaterThan, hasStream, in, invalidFormat, isNotNull, isNullOp, lessOrEquals, lessThan, normalize, notEquals, outOfRange, readExternalFromArray, recycle, setBigDecimal, setInto, setInto, setObjectForCast, setToNull, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, throwLangSetMismatch, typePrecedence, typeToBigDecimal

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.derby.iapi.types.DataValueDescriptor

checkHostVariable, cloneHolder, coalesce, compare, compare, compare, equals, getBoolean, getByte, getBytes, getDate, getDouble, getFloat, getInt, getLong, getShort, getStream, getTime, getTimestamp, getTraceString, greaterOrEquals, greaterThan, hasStream, in, isNotNull, isNullOp, lessOrEquals, lessThan, normalize, notEquals, readExternalFromArray, recycle, setBigDecimal, setInto, setInto, setObjectForCast, setToNull, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, typePrecedence, typeToBigDecimal

Constructor Detail

B2I_10_3

public B2I_10_3()

Method Detail

getTypeFormatId

public int getTypeFormatId()

Return my format identifier.

Specified by:

getTypeFormatId in interface TypedFormat

Overrides:

getTypeFormatId in class B2I

Returns:

The identifier. (A UUID stuffed in an array of 16 bytes).

See Also:

TypedFormat.getTypeFormatId()

writeExternal

public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException

Store the stored representation of the column value in the stream.

For more detailed description of the format see documentation at top of file.

Specified by:

writeExternal in interface java.io.Externalizable

Overrides:

writeExternal in class B2I

Throws:

java.io.IOException - thrown by writeObject()

See Also:

Externalizable.writeExternal(java.io.ObjectOutput)