org.apache.drill.metastore.expressions

Class SimplePredicate<T>

java.lang.Object

org.apache.drill.metastore.expressions.SimplePredicate<T>

Type Parameters:

T - predicate value type

All Implemented Interfaces:

FilterExpression

Direct Known Subclasses:

SimplePredicate.Equal, SimplePredicate.GreaterThan, SimplePredicate.GreaterThanOrEqual, SimplePredicate.LessThan, SimplePredicate.LessThanOrEqual, SimplePredicate.NotEqual

public abstract class SimplePredicate<T>
extends Object
implements FilterExpression

Indicates simple predicate implementations which have column and one value.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SimplePredicate.Equal<T> Indicates FilterExpression.Operator.EQUAL operator expression: storagePlugin = 'dfs'.
static class	SimplePredicate.GreaterThan<T> Indicates FilterExpression.Operator.GREATER_THAN operator expression: index > 1.
static class	SimplePredicate.GreaterThanOrEqual<T> Indicates FilterExpression.Operator.GREATER_THAN_OR_EQUAL operator expression: index >= 1.
static class	SimplePredicate.LessThan<T> Indicates FilterExpression.Operator.LESS_THAN operator expression: index < 1.
static class	SimplePredicate.LessThanOrEqual<T> Indicates FilterExpression.Operator.LESS_THAN_OR_EQUAL operator expression: index <= 1.
static class	SimplePredicate.NotEqual<T> Indicates FilterExpression.Operator.NOT_EQUAL operator expression: storagePlugin != 'dfs'.

Nested classes/interfaces inherited from interface org.apache.drill.metastore.expressions.FilterExpression

FilterExpression.Operator, FilterExpression.Visitor<T>

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SimplePredicate(MetastoreColumn column, FilterExpression.Operator operator, T value)

Method Summary

Modifier and Type	Method and Description
MetastoreColumn	column()
FilterExpression.Operator	operator()
String	toString()
T	value()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.drill.metastore.expressions.FilterExpression

accept, and, and, equal, greaterThan, greaterThanOrEqual, in, in, isNotNull, isNull, lessThan, lessThanOrEqual, not, notEqual, notIn, notIn, or

Constructor Detail

SimplePredicate

protected SimplePredicate(MetastoreColumn column,
                          FilterExpression.Operator operator,
                          T value)

Method Detail

column

public MetastoreColumn column()

value

public T value()

operator

public FilterExpression.Operator operator()

Specified by:

operator in interface FilterExpression

toString

public String toString()

Overrides:

toString in class Object