Package com.apple.foundationdb.record.query.expressions

Class Comparisons

java.lang.Object

com.apple.foundationdb.record.query.expressions.Comparisons

@API(STABLE)
public class Comparisons
extends Object

Helper methods for building Comparisons.Comparisons.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	Comparisons.Comparison	A comparison between a value associated with someplace in the record (such as a field) and a value associated with the plan (such as a constant or a bound parameter).
static class	Comparisons.EvaluationContextRequiredException	Exception thrown when comparison evaluation needs the query context, but none was supplied.
static class	Comparisons.ListComparison	A comparison with a list of values.
static class	Comparisons.MultiColumnComparison	Comparison wrapping another one and answering true to Comparisons.MultiColumnComparison.hasMultiColumnComparand().
static class	Comparisons.NullComparison	A unary predicate for special nullity checks, such as NULL and NOT NULL.
static class	Comparisons.ParameterComparison	A comparison with a bound parameter, as opposed to a literal constant in the query.
static class	Comparisons.SimpleComparison	A comparison with a constant value.
static class	Comparisons.TextComparison	A text-style comparison, such as containing a given set of tokens.
static class	Comparisons.TextContainsAllPrefixesComparison	A Comparisons.TextComparison that checks for all prefixes.
static class	Comparisons.TextWithMaxDistanceComparison	A Comparisons.TextComparison that must be satisfied within a certain number of text tokens.
static class	Comparisons.Type	The type for a Comparisons.Comparison predicate.

Field Summary

Fields

Modifier and Type	Field	Description
static Object	COMPARISON_SKIPPED_BINDING
static Comparisons.Comparison	LIST_EMPTY

Method Summary

Modifier and Type	Method	Description
static int	compare(Object fieldValue, Object comparand)
static Boolean	evalComparison(Comparisons.Type type, Object value, Object comparand)
static Boolean	evalListComparison(Comparisons.Type type, Object value, List comparand)
static String	toPrintable(Object value)

Methods inherited from class java.lang.Object

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

Field Detail

LIST_EMPTY

public static final Comparisons.Comparison LIST_EMPTY

COMPARISON_SKIPPED_BINDING

public static final Object COMPARISON_SKIPPED_BINDING

Method Detail

compare

public static int compare(@Nullable
                          Object fieldValue,
                          @Nullable
                          Object comparand)

evalComparison

@Nullable
public static Boolean evalComparison(@Nonnull
                                     Comparisons.Type type,
                                     @Nullable
                                     Object value,
                                     @Nullable
                                     Object comparand)

evalListComparison

@Nullable
public static Boolean evalListComparison(@Nonnull
                                         Comparisons.Type type,
                                         @Nullable
                                         Object value,
                                         @Nullable
                                         List comparand)

toPrintable

public static String toPrintable(@Nullable
                                 Object value)