Apache Derby Database Engine and Embedded JDBC Driver 10.17.1.0 · org.apache.derby.impl.store.access.conglomerate.TemplateRow

Access	Constructor and Description
private	TemplateRow()

Method Summary

Modifier and Type	Method and Description
private static DataValueDescriptor[]	allocate_objects(Transaction rawtran, int The number of columns to allocate for array. num_cols_to_allocate, FormatableBitSet description of partial set of columns to built as described in RowUtil. If null do all the columns. column_list, int[] An array of format ids representing every column in the table. column_list describes which of these columns to populate into the columns array. format_ids, int[] collation_ids) Allocate new objects to array based on format id's and column_list.
public static boolean	Returns: boolean indicating if template matches format id's checkColumnTypes(DataValueFactory dvf, int[] array of format ids which are the types of cols in row format_ids, int[] collation_ids, DataValueDescriptor[] the array of columns that make up the row. row) Check that columns in the row conform to a set of format id's, both in number and type.
public static DataValueDescriptor[]	Returns: The new row. newBranchRow(Transaction rawtran, int[] an array of format id's, one per column in row. format_ids, int[] collation_ids, DataValueDescriptor The object to place in the last column of the template. page_ptr) Generate an "empty" row to match the format id + coluumn specification.
public static DataValueDescriptor[]	Returns: The new row. newRow(DataValueDescriptor[] An array which represents a row as described in RowUtil. template) Generate an "empty" row to match the format id specification.
public static DataValueDescriptor[]	Returns: The new row. newRow(Transaction rawtran, FormatableBitSet column_list, int[] an array of format id's, one per column in row. format_ids, int[] collation_ids) Generate an "empty" row to match the format id specification.
public static DataValueDescriptor[]	newU8Row(int nkeys) Constuctor for creating a template row which stores n SQLLongint's

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

TemplateRow	back to summary
private TemplateRow()

Method Detail

allocate_objects	back to summary
private static DataValueDescriptor[] allocate_objects(Transaction rawtran, int num_cols_to_allocate, FormatableBitSet column_list, int[] format_ids, int[] collation_ids) throws StandardException Allocate new objects to array based on format id's and column_list. Parameters num_cols_to_allocate:int The number of columns to allocate for array. column_list:FormatableBitSet description of partial set of columns to built as described in RowUtil. If null do all the columns. format_ids:int[] An array of format ids representing every column in the table. column_list describes which of these columns to populate into the columns array. Exceptions StandardException: Standard exception policy.

allocate_objects

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private static DataValueDescriptor[] allocate_objects(Transaction rawtran, int num_cols_to_allocate, FormatableBitSet column_list, int[] format_ids, int[] collation_ids) throws StandardException

Allocate new objects to array based on format id's and column_list.

Parameters

num_cols_to_allocate:int: The number of columns to allocate for array.
column_list:FormatableBitSet: description of partial set of columns to built as described in RowUtil. If null do all the columns.
format_ids:int[]: An array of format ids representing every column in the table. column_list describes which of these columns to populate into the columns array.

Exceptions

StandardException:: Standard exception policy.

checkColumnTypes	back to summary
public static boolean checkColumnTypes(DataValueFactory dvf, int[] format_ids, int[] collation_ids, DataValueDescriptor[] row) throws StandardException Check that columns in the row conform to a set of format id's, both in number and type. Parameters format_ids:int[] array of format ids which are the types of cols in row row:DataValueDescriptor[] the array of columns that make up the row. Returns:boolean boolean indicating if template matches format id's Exceptions StandardException: Standard exception policy.

checkColumnTypes

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public static boolean checkColumnTypes(DataValueFactory dvf, int[] format_ids, int[] collation_ids, DataValueDescriptor[] row) throws StandardException

Check that columns in the row conform to a set of format id's, both in number and type.

Parameters

format_ids:int[]: array of format ids which are the types of cols in row
row:DataValueDescriptor[]: the array of columns that make up the row.

Returns:boolean

boolean indicating if template matches format id's

Exceptions

StandardException:: Standard exception policy.

newBranchRow	back to summary
public static DataValueDescriptor[] newBranchRow(Transaction rawtran, int[] format_ids, int[] collation_ids, DataValueDescriptor page_ptr) throws StandardException Generate an "empty" row to match the format id + coluumn specification. Generate an array of new'd objects matching the format id specification passed in, and the column passed in. The new row is first made up of columns matching the format ids, and then followed by one other column matching the column passed in. This routine is mostly used by the btree code to generate temporary branch rows needed during operations like split. Parameters format_ids:int[] an array of format id's, one per column in row. page_ptr:DataValueDescriptor The object to place in the last column of the template. Returns:DataValueDescriptor[] The new row. Exceptions StandardException: Standard exception policy.

newBranchRow

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public static DataValueDescriptor[] newBranchRow(Transaction rawtran, int[] format_ids, int[] collation_ids, DataValueDescriptor page_ptr) throws StandardException

Generate an "empty" row to match the format id + coluumn specification.

Generate an array of new'd objects matching the format id specification passed in, and the column passed in. The new row is first made up of columns matching the format ids, and then followed by one other column matching the column passed in. This routine is mostly used by the btree code to generate temporary branch rows needed during operations like split.

Parameters

format_ids:int[]: an array of format id's, one per column in row.
page_ptr:DataValueDescriptor: The object to place in the last column of the template.

Returns:DataValueDescriptor[]

The new row.

Exceptions

StandardException:: Standard exception policy.

newRow back to summary

newRow	back to summary
public static DataValueDescriptor[] newRow(DataValueDescriptor[] template) throws StandardException Generate an "empty" row to match the format id specification. Generate an array of new'd objects matching the format id specification passed in. This routine is mostly used by the btree code to generate temporary rows needed during operations like split. It is more efficient to allocate new objects based on the old object vs. calling the Monitor. Parameters template:DataValueDescriptor[] An array which represents a row as described in RowUtil. Returns:DataValueDescriptor[] The new row. Exceptions StandardException: Standard exception policy. See Also `RowUtil`

public static DataValueDescriptor[] newRow(DataValueDescriptor[] template) throws StandardException

Generate an "empty" row to match the format id specification.

Generate an array of new'd objects matching the format id specification passed in. This routine is mostly used by the btree code to generate temporary rows needed during operations like split. It is more efficient to allocate new objects based on the old object vs. calling the Monitor.

Parameters

template:DataValueDescriptor[]: An array which represents a row as described in RowUtil.

Returns:DataValueDescriptor[]

The new row.

Exceptions

StandardException:: Standard exception policy.

See Also

RowUtil

newRow	back to summary
public static DataValueDescriptor[] newRow(Transaction rawtran, FormatableBitSet column_list, int[] format_ids, int[] collation_ids) throws StandardException Generate an "empty" row to match the format id specification. Generate an array of new'd objects matching the format id specification passed in. This routine is mostly used by the btree code to generate temporary rows needed during operations like split. Parameters format_ids:int[] an array of format id's, one per column in row. Returns:DataValueDescriptor[] The new row. Exceptions StandardException: Standard exception policy.

newRow

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public static DataValueDescriptor[] newRow(Transaction rawtran, FormatableBitSet column_list, int[] format_ids, int[] collation_ids) throws StandardException

Generate an "empty" row to match the format id specification.

Generate an array of new'd objects matching the format id specification passed in. This routine is mostly used by the btree code to generate temporary rows needed during operations like split.

Parameters

format_ids:int[]: an array of format id's, one per column in row.

Returns:DataValueDescriptor[]

The new row.

Exceptions

StandardException:: Standard exception policy.

newU8Row	back to summary
public static DataValueDescriptor[] newU8Row(int nkeys) Constuctor for creating a template row which stores n SQLLongint's

public final Class TemplateRow

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