H2 Database Engine 2.3.232 · org.h2.table.ColumnResolver

Method Summary

Modifier and Type	Method and Description
public Column	Returns: the column with the specified name, or `null` findColumn(String the column name, must be a derived name if this column resolver has a derived column list name) Get the column with the specified name.
public default String	Returns: column name getColumnName(Column column column) Get the name of the specified column.
public Column[]	Returns: the column list getColumns() Get the column list.
public default Column	Returns: the row id column or null getRowIdColumn() Get the row id pseudo column, if there is one.
public default String	Returns: the schema name or null getSchemaName() Get the schema name or null.
public default Select	Returns: the select statement getSelect() Get the select statement.
public default Column[]	Returns: the system columns or null getSystemColumns() Get the list of system columns, if any.
public default String	Returns: the table alias getTableAlias() Get the table alias.
public default TableFilter	Returns: the table filter getTableFilter() Get the table filter.
public Value	Returns: the value getValue(Column the column column) Get the value for the given column.
public default boolean	Returns: `true` if this column resolver has a derived column list, `false` otherwise hasDerivedColumnList() Returns whether this column resolver has a derived column list.
public default Expression	Returns: the optimized expression optimize(ExpressionColumn the expression column expressionColumn, Column the column column) Get the expression that represents this column.

Method Detail

findColumn back to summary

findColumn	back to summary
public Column findColumn(String name) Get the column with the specified name. Parameters name:String the column name, must be a derived name if this column resolver has a derived column list Returns:Column the column with the specified name, or `null`

public Column findColumn(String name)

Get the column with the specified name.

Parameters

name:String: the column name, must be a derived name if this column resolver has a derived column list

Returns:Column

the column with the specified name, or null

getColumnName	back to summary
public default String getColumnName(Column column) Get the name of the specified column. Parameters column:Column column Returns:String column name

getColumnName

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public default String getColumnName(Column column)

Get the name of the specified column.

Parameters

column:Column: column

Returns:String

column name

getColumns	back to summary
public Column[] getColumns() Get the column list. Returns:Column[] the column list

getColumns

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public Column[] getColumns()

Get the column list.

Returns:Column[]: the column list

getRowIdColumn	back to summary
public default Column getRowIdColumn() Get the row id pseudo column, if there is one. Returns:Column the row id column or null

getRowIdColumn

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public default Column getRowIdColumn()

Get the row id pseudo column, if there is one.

Returns:Column: the row id column or null

getSchemaName	back to summary
public default String getSchemaName() Get the schema name or null. Returns:String the schema name or null

getSchemaName

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public default String getSchemaName()

Get the schema name or null.

Returns:String: the schema name or null

getSelect	back to summary
public default Select getSelect() Get the select statement. Returns:Select the select statement

getSelect

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public default Select getSelect()

Get the select statement.

Returns:Select: the select statement

getSystemColumns	back to summary
public default Column[] getSystemColumns() Get the list of system columns, if any. Returns:Column[] the system columns or null

getSystemColumns

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public default Column[] getSystemColumns()

Get the list of system columns, if any.

Returns:Column[]: the system columns or null

getTableAlias	back to summary
public default String getTableAlias() Get the table alias. Returns:String the table alias

getTableAlias

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public default String getTableAlias()

Get the table alias.

Returns:String: the table alias

getTableFilter	back to summary
public default TableFilter getTableFilter() Get the table filter. Returns:TableFilter the table filter

getTableFilter

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public default TableFilter getTableFilter()

Get the table filter.

Returns:TableFilter: the table filter

getValue	back to summary
public Value getValue(Column column) Get the value for the given column. Parameters column:Column the column Returns:Value the value

getValue

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public Value getValue(Column column)

Get the value for the given column.

Parameters

column:Column: the column

Returns:Value

the value

hasDerivedColumnList back to summary

hasDerivedColumnList	back to summary
public default boolean hasDerivedColumnList() Returns whether this column resolver has a derived column list. Returns:boolean `true` if this column resolver has a derived column list, `false` otherwise

public default boolean hasDerivedColumnList()

Returns whether this column resolver has a derived column list.

Returns:boolean: true if this column resolver has a derived column list, false otherwise

optimize	back to summary
public default Expression optimize(ExpressionColumn expressionColumn, Column column) Get the expression that represents this column. Parameters expressionColumn:ExpressionColumn the expression column column:Column the column Returns:Expression the optimized expression

optimize

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public default Expression optimize(ExpressionColumn expressionColumn, Column column)

Get the expression that represents this column.

Parameters

expressionColumn:ExpressionColumn: the expression column
column:Column: the column

Returns:Expression

the optimized expression

public Interface ColumnResolver

Method Summary

Method Detail