Package org.h2.table

Interface ColumnResolver

    • Method Detail

      • getTableAlias

        default java.lang.String getTableAlias()
        Get the table alias.
        Returns:
        the table alias
      • getColumns

        Column[] getColumns()
        Get the column list.
        Returns:
        the column list
      • findColumn

        Column findColumn​(java.lang.String name)
        Get the column with the specified name.
        Parameters:
        name - the column name, must be a derived name if this column resolver has a derived column list
        Returns:
        the column with the specified name, or null
      • getColumnName

        default java.lang.String getColumnName​(Column column)
        Get the name of the specified column.
        Parameters:
        column - column
        Returns:
        column name
      • hasDerivedColumnList

        default boolean hasDerivedColumnList()
        Returns whether this column resolver has a derived column list.
        Returns:
        true if this column resolver has a derived column list, false otherwise
      • getSystemColumns

        default Column[] getSystemColumns()
        Get the list of system columns, if any.
        Returns:
        the system columns or null
      • getRowIdColumn

        default Column getRowIdColumn()
        Get the row id pseudo column, if there is one.
        Returns:
        the row id column or null
      • getSchemaName

        default java.lang.String getSchemaName()
        Get the schema name or null.
        Returns:
        the schema name or null
      • getValue

        Value getValue​(Column column)
        Get the value for the given column.
        Parameters:
        column - the column
        Returns:
        the value
      • getTableFilter

        default TableFilter getTableFilter()
        Get the table filter.
        Returns:
        the table filter
      • getSelect

        default Select getSelect()
        Get the select statement.
        Returns:
        the select statement
      • optimize

        default Expression optimize​(ExpressionColumn expressionColumn,
                                    Column column)
        Get the expression that represents this column.
        Parameters:
        expressionColumn - the expression column
        column - the column
        Returns:
        the optimized expression