Package io.deephaven.engine.table.impl.select

Class SelectColumnWithDeclaredBarriers

java.lang.Object
io.deephaven.engine.table.impl.select.SelectColumnWithDeclaredBarriers
All Implemented Interfaces:
ConcurrencyControl<Selectable>, Selectable, SelectColumn
public class SelectColumnWithDeclaredBarriers extends Object
A SelectColumn that declares the given barriers.

  • Field Details

    • inner

      protected final SelectColumn inner
      The select column that is being wrapped.

  • Method Details

    • addDeclaredBarriers

      public static SelectColumn addDeclaredBarriers(SelectColumn toWrap, Object... declaredBarriers)
      Add the given declared barriers to a SelectColumn.
      Parameters:
      toWrap - the SelectColumn to wrap with additional barriers
      declaredBarriers - the barriers to declare on the result
      Returns:
      a new SelectColumn that respects the given barriers.

    • copy

      public SelectColumn copy()
      Description copied from interface: SelectColumn
      Create a copy of this SelectColumn.
      Returns:
      an independent copy of this SelectColumn.

    • declaredBarriers

      public Object[] declaredBarriers()
      Specified by:
      declaredBarriers in interface Selectable
      Returns:
      the barriers this selectable declares

    • initInputs

      public List<String> initInputs(@NotNull @NotNull TrackingRowSet rowSet, @NotNull @NotNull Map<String,? extends ColumnSource<?>> columnsOfInterest)
      Description copied from interface: SelectColumn
      Initialize the column from the provided set of underlying columns and row set.
      Specified by:
      initInputs in interface SelectColumn
      Parameters:
      rowSet - the base row set
      columnsOfInterest - the input columns
      Returns:
      a list of columns on which the result of this is dependent

    • initDef

      public List<String> initDef(@NotNull @NotNull Map<String,ColumnDefinition<?>> columnDefinitionMap)
      Description copied from interface: SelectColumn
      Initialize any internal column definitions from the provided initial. Any formulae will be compiled immediately using the QueryCompiler in the current ExecutionContext.
      Specified by:
      initDef in interface SelectColumn
      Parameters:
      columnDefinitionMap - the starting set of column definitions; valid for this call only
      Returns:
      a list of columns on which the result of this is dependent

    • initDef

      public List<String> initDef(@NotNull @NotNull Map<String,ColumnDefinition<?>> columnDefinitionMap, @NotNull @NotNull QueryCompilerRequestProcessor compilationRequestProcessor)
      Description copied from interface: SelectColumn
      Initialize any internal column definitions from the provided initial. A compilation request consumer is provided to allow for deferred compilation of expressions that belong to the same query.

      Compilations must be resolved before using this SelectColumn.

      Specified by:
      initDef in interface SelectColumn
      Parameters:
      columnDefinitionMap - the starting set of column definitions; valid for this call only
      compilationRequestProcessor - a consumer to submit compilation requests; valid for this call only
      Returns:
      a list of columns on which the result of this is dependent

    • getReturnedType

      public Class<?> getReturnedType()
      Description copied from interface: SelectColumn
      Get the data type stored in the resultant column.
      Specified by:
      getReturnedType in interface SelectColumn
      Returns:
      the type

    • getReturnedComponentType

      public Class<?> getReturnedComponentType()
      Description copied from interface: SelectColumn
      Get the data component type stored in the resultant column.
      Specified by:
      getReturnedComponentType in interface SelectColumn
      Returns:
      the component type

    • getColumns

      public List<String> getColumns()
      Description copied from interface: SelectColumn
      Get a list of the names of columns used in this SelectColumn. Behavior is undefined if none of the init* methods have been called yet.
      Specified by:
      getColumns in interface SelectColumn
      Returns:
      the columns used in this SelectColumn

    • getColumnArrays

      public List<String> getColumnArrays()
      Description copied from interface: SelectColumn
      Get a list of the names of column arrays used in this SelectColumn. Behavior is undefined if none of the init* methods have been called yet.
      Specified by:
      getColumnArrays in interface SelectColumn
      Returns:
      the list of column arrays used

    • getDataView

      @NotNull public @NotNull ColumnSource<?> getDataView()
      Description copied from interface: SelectColumn
      Get a ColumnSource that can be used to access the data on demand.
      Specified by:
      getDataView in interface SelectColumn
      Returns:
      a ColumnSource

    • getLazyView

      @NotNull public @NotNull ColumnSource<?> getLazyView()
      Description copied from interface: SelectColumn
      Returns a lazily computed view of this column.
      Specified by:
      getLazyView in interface SelectColumn
      Returns:
      a lazily computed column source

    • getName

      public String getName()
      Description copied from interface: SelectColumn
      Get the name of the resultant column.
      Specified by:
      getName in interface SelectColumn
      Returns:
      the name of the column

    • getMatchPair

      public MatchPair getMatchPair()
      Description copied from interface: SelectColumn
      Get a MatchPair for this column, if applicable.
      Specified by:
      getMatchPair in interface SelectColumn
      Returns:
      the MatchPair for this column, if applicable.

    • newDestInstance

      public WritableColumnSource<?> newDestInstance(long size)
      Description copied from interface: SelectColumn
      Create a new WritableColumnSource. The returned column source must be capable of handling updates.
      Specified by:
      newDestInstance in interface SelectColumn
      Parameters:
      size - A hint as to the number of rows that will be used
      Returns:
      a new WritableColumnSource

    • newFlatDestInstance

      public WritableColumnSource<?> newFlatDestInstance(long size)
      Description copied from interface: SelectColumn
      Create a new immutable WritableColumnSource. The returned column source should be flat, and need not handle updates.
      Specified by:
      newFlatDestInstance in interface SelectColumn
      Parameters:
      size - A hint as to the number of rows that will be used
      Returns:
      a new WritableColumnSource

    • isRetain

      public boolean isRetain()
      Specified by:
      isRetain in interface SelectColumn
      Returns:

    • validateSafeForRefresh

      public void validateSafeForRefresh(@NotNull @NotNull BaseTable<?> sourceTable)
      Description copied from interface: SelectColumn
      Validate that this SelectColumn is safe to use in the context of the provided sourceTable.
      Specified by:
      validateSafeForRefresh in interface SelectColumn
      Parameters:
      sourceTable - the source table

    • isStateless

      public boolean isStateless()
      Description copied from interface: SelectColumn
      Returns true if this column is stateless (i.e. one row does not depend on the order of evaluation for another row).
      Specified by:
      isStateless in interface SelectColumn

    • hasVirtualRowVariables

      public boolean hasVirtualRowVariables()
      Description copied from interface: SelectColumn
      Returns true if this column uses row virtual offset columns of i, ii or k.
      Specified by:
      hasVirtualRowVariables in interface SelectColumn

    • recomputeOnModifiedRow

      public boolean recomputeOnModifiedRow()
      Description copied from interface: SelectColumn
      Should we ignore modified column sets, and always re-evaluate this column when the row changes?
      Specified by:
      recomputeOnModifiedRow in interface SelectColumn
      Returns:
      true if this column should be evaluated on every row modification

    • newColumn

      public ColumnName newColumn()
      Description copied from interface: Selectable
      The new column name, to be added to the new table.
      Specified by:
      newColumn in interface Selectable
      Specified by:
      newColumn in interface SelectColumn
      Returns:
      the new column name

    • expression

      public Expression expression()
      Description copied from interface: Selectable
      The expression.
      Specified by:
      expression in interface Selectable
      Specified by:
      expression in interface SelectColumn
      Returns:
      the expression

    • hasConstantArrayAccess

      public boolean hasConstantArrayAccess()
      Specified by:
      hasConstantArrayAccess in interface SelectColumn

    • hasConstantValue

      public boolean hasConstantValue()
      Specified by:
      hasConstantValue in interface SelectColumn

    • maybeGetSourceColumn

      public Optional<SourceColumn> maybeGetSourceColumn()
      Specified by:
      maybeGetSourceColumn in interface SelectColumn

    • maybeGetFormulaColumn

      public Optional<FormulaColumn> maybeGetFormulaColumn()
      Specified by:
      maybeGetFormulaColumn in interface SelectColumn

    • respectedBarriers

      public Object[] respectedBarriers()
      Specified by:
      respectedBarriers in interface Selectable
      Returns:
      the barriers this selectable respects