Package com.stardog.stark.query

Class BindingSets

java.lang.Object

com.stardog.stark.query.BindingSets

public final class BindingSets
extends java.lang.Object

Utilities for working with BindingSet

Since:

1.0

Version:

1.0

Author:

Michael Grove

See Also:

Binding, BindingSet

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	BindingSets.Builder	Builder for BindingSet

Method Summary

Modifier and Type	Method	Description
static BindingSets.Builder	builder()	Return a new BindingSets.Builder for a BindingSet
static boolean	compatible(BindingSet bs1, BindingSet bs2)	Check whether two BindingSets are compatible.
static BindingSet	empty()	Return an empty BindingSet
static BindingSet	of(Binding theBinding, Binding... theOtherBindings)	Create a BindingSet comprised if the given bindings
static BindingSet	of(java.lang.String theVar, Value theValue)	Create a BindingSet comprised if the given binding
static java.util.function.Function<BindingSet,Value>	select(java.lang.String theVar)	Function to select the values for the given variable in a series of bindings
static java.util.function.Function<BindingSet,Statement>	toStatement()	Return a Function that will transform a BindingSet into a Statement.
static BindingSet	union(BindingSet theBindings1, BindingSet theBindings2)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

empty

@Nonnull
public static BindingSet empty()

Return an empty BindingSet

Returns:

empty bindings

union

@Nonnull
public static BindingSet union(@Nonnull
                               BindingSet theBindings1,
                               @Nonnull
                               BindingSet theBindings2)

toStatement

public static java.util.function.Function<BindingSet,Statement> toStatement()

Return a Function that will transform a BindingSet into a Statement. This assumes that the `BindingSet`s will have the variables, `s`, `p`, `o`, and optionally, `g`, corresponding to the `SPOC` of the `Statement` to be created. If `g` is not bound, the `Statement` will use the default graph as its context.

Returns:

the function to use for xform

of

@Nonnull
public static BindingSet of(@Nonnull
                            Binding theBinding,
                            @Nonnull
                            Binding... theOtherBindings)

Create a BindingSet comprised if the given bindings

Parameters:

theBinding - a binding

theOtherBindings - additional bindings

Returns:

the new `BindingSet`

of

@Nonnull
public static BindingSet of(@Nonnull
                            java.lang.String theVar,
                            @Nonnull
                            Value theValue)

Create a BindingSet comprised if the given binding

Parameters:

theVar - the variable

theValue - the bound value

Returns:

the new `BindingSet`

select

@Nonnull
public static java.util.function.Function<BindingSet,Value> select(@Nonnull
                                                                         java.lang.String theVar)

Function to select the values for the given variable in a series of bindings

Parameters:

theVar - the variable to select

Returns:

the function

compatible

public static boolean compatible(@Nonnull
                                 BindingSet bs1,
                                 @Nonnull
                                 BindingSet bs2)

Check whether two BindingSets are compatible. Two binding sets are compatible if they have equal values for each binding name that occurs in both binding sets.

builder

@Nonnull
public static BindingSets.Builder builder()

Return a new BindingSets.Builder for a BindingSet

Returns:

a new `Builder`