Package org.apache.cassandra.cql3

Class Vectors

java.lang.Object

org.apache.cassandra.cql3.Vectors

public class Vectors
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Vectors.DelayedValue<T>	Basically similar to a Value, but with some non-pure function (that need to be evaluated at execution time) in it.
static class	Vectors.Literal
static class	Vectors.Value<T>

Method Summary

Modifier and Type	Method	Description
static <T> VectorType<?>	getExactVectorTypeIfKnown(java.util.List<T> items, java.util.function.Function<T,AbstractType<?>> mapper)	Returns the exact VectorType from the items if it can be known.
static <T> VectorType<?>	getPreferredCompatibleType(java.util.List<T> items, java.util.function.Function<T,AbstractType<?>> mapper)
static AssignmentTestable.TestResult	testVectorAssignment(ColumnSpecification receiver, java.util.List<? extends AssignmentTestable> elements)	Tests that the vector with the specified elements can be assigned to the specified column.

Methods inherited from class java.lang.Object

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

Method Detail

testVectorAssignment

public static AssignmentTestable.TestResult testVectorAssignment(ColumnSpecification receiver,
                                                                 java.util.List<? extends AssignmentTestable> elements)

Tests that the vector with the specified elements can be assigned to the specified column.

Parameters:

receiver - the receiving column

elements - the vector elements

getExactVectorTypeIfKnown

public static <T> VectorType<?> getExactVectorTypeIfKnown(java.util.List<T> items,
                                                          java.util.function.Function<T,AbstractType<?>> mapper)

Returns the exact VectorType from the items if it can be known.

Parameters:

items - the items mapped to the vector elements

mapper - the mapper used to retrieve the element types from the items

Returns:

the exact VectorType from the items if it can be known or null

getPreferredCompatibleType

public static <T> VectorType<?> getPreferredCompatibleType(java.util.List<T> items,
                                                           java.util.function.Function<T,AbstractType<?>> mapper)