Package com.bigdata.bop

This package provides an API for query operators.

See:
Description

Interface Summary

AbstractAccessPathOp.Annotations
BOp	An operator, such as a constant, variable, join, sort, filter, etc.
BOp.Annotations	Interface declaring well known annotations.
BTreeAnnotations	Annotations for an operator using an BTree.
BufferAnnotations	Annotations for BlockingBuffer as used by various kinds of operators.
ConcurrentHashMapAnnotations	Annotations for an operator using an internal concurrent hash map.
Constant.Annotations
HashMapAnnotations	Annotations for an operator using an internal hash map.
HTreeAnnotations	Annotations for an operator using an HTree.
IBind<E>	A marker interface for an IValueExpression which has the side-effect of binding a value on an IVariable.
IBindingSet	Interface for a set of bindings.
IConstant<E>	A constant.
IConstraint	An interface for specifying constraints on the allowable states of an IBindingSet.
IdFactory	An interface for a bop identifier factory.
IElement	An interface for exposing the data in an object view of a tuple by index position.
ILocatableResourceAnnotations	Annotations to locate a resource.
IndexAnnotations	Annotations for operators using a persistence capable index.
IPredicate<E>	An immutable constraint on the elements visited using an IAccessPath.
IPredicate.Annotations	Interface declaring well known annotations.
IQueryAttributes	An interface providing access to named attribute values which may be shared across operators or across multiple invocations of the same operator.
IQueryContext	Context for the evaluation of a query pipeline.
IShardwisePipelineOp<E>	An interface for PipelineOps which are mapped across shards.
ITimestampAnnotations	Annotation for the timestamp of a resource view.
IValueExpression<E>	An expression which may be evaluated to a value.
IValueExpressionConstraint<X>
IVariable<E>	A variable.
IVariableFactory	A factory for IVariables (used to facilitate unit testing).
IVariableOrConstant<E>	Abstraction models either a constant or an unbound variable.
PipelineOp.Annotations

Class Summary

AbstractAccessPathOp<E>	Interface for evaluating operations producing chunks of elements (tuples materialized from some index of a relation).
Bind<E>	Operator causes a variable to be bound to the result of its evaluation as a side-effect.
BOpBase	Abstract base class for copy-on-write BOps.
BOpContext<E>	The evaluation context for the operator (NOT serializable).
BOpContextBase	Base class for the bigdata operation evaluation context (NOT serializable).
BOpIdFactory	A factory which may be used when some identifiers need to be reserved.
BOpUtility	Operator utility class.
Constant<E>	A constant.
ContextBindingSet	Wraps an IBindingSet to provide access to the BOpContext.
CoreBaseBOp	Base class with some common methods for mutable and copy-on-write BOp s.
DefaultQueryAttributes	Default implementation.
ImmutableBOp	Base class for immutable operators such as Var and Constant.
ModifiableBOpBase	Abstract base class for mutable BOps.
NV	A name-value pair.
PipelineOp	Abstract base class for pipeline operators where the data moving along the pipeline is chunks of IBindingSets.
Var<E>	A variable.

Enum Summary

BOpEvaluationContext

Type safe enumeration indicates where an operator may be evaluated.

Exception Summary

BadBOpIdTypeException	Exception thrown when a BOp.Annotations.BOP_ID is not an Integer.
BadConditionalGroupIdTypeException	Exception thrown when a PipelineOp.Annotations#CONDITIONAL_GROUP is not an Integer.
DuplicateBOpException	Exception thrown when a BOp appears more than once in an operator tree (operator trees must not contain loops and operator instances may not appear more than once unless they are an IConstant or an IVariable).
DuplicateBOpIdException	Exception thrown when a BOp.Annotations.BOP_ID appears more than once in an operator tree with the same value (the bop identifiers must be distinct).
NoBOpIdException	This exception is throw when a bop which is required to have a bopId does not have its bopId property defined.
NoSuchBOpException	Exception thrown when there is no BOp in an operator tree having the desired BOp.Annotations.BOP_ID.
NotPipelineOpException	Exception thrown when a BOp which is not a PipelineOp is encountered in a context which only permits PipelineOps.

Package com.bigdata.bop Description

This package provides an API for query operators.