Package org.apache.parquet.filter2.predicate

Interface Summary

Interface	Description
FilterPredicate	A FilterPredicate is an expression tree describing the criteria for which records to keep when loading data from a parquet file.
FilterPredicate.Visitor<R>	A FilterPredicate Visitor must visit all the operators in a FilterPredicate expression tree, and must handle recursion itself, per the visitor pattern.
Operators.SupportsEqNotEq
Operators.SupportsLtGt

Class Summary

Class	Description
FilterApi	The Filter API is expressed through these static methods.
LogicalInverseRewriter	Recursively removes all use of the not() operator in a predicate by replacing all instances of not(x) with the inverse(x), eg: not(and(eq(), not(eq(y))) -> or(notEq(), eq(y)) The returned predicate should have the same meaning as the original, but without the use of the not() operator.
LogicalInverter	Converts a FilterPredicate to its logical inverse.
Operators	These are the operators in a filter predicate expression tree.
Operators.And
Operators.BinaryColumn
Operators.BooleanColumn
Operators.Column<T extends Comparable<T>>
Operators.DoubleColumn
Operators.Eq<T extends Comparable<T>>
Operators.FloatColumn
Operators.Gt<T extends Comparable<T>>
Operators.GtEq<T extends Comparable<T>>
Operators.In<T extends Comparable<T>>
Operators.IntColumn
Operators.LogicalNotUserDefined<T extends Comparable<T>,U extends UserDefinedPredicate<T>>
Operators.LongColumn
Operators.Lt<T extends Comparable<T>>
Operators.LtEq<T extends Comparable<T>>
Operators.Not
Operators.NotEq<T extends Comparable<T>>
Operators.NotIn<T extends Comparable<T>>
Operators.Or
Operators.SetColumnFilterPredicate<T extends Comparable<T>>	Base class for Operators.In and Operators.NotIn.
Operators.UserDefined<T extends Comparable<T>,U extends UserDefinedPredicate<T>>
Operators.UserDefinedByClass<T extends Comparable<T>,U extends UserDefinedPredicate<T>>
Operators.UserDefinedByInstance<T extends Comparable<T>,U extends UserDefinedPredicate<T> & Serializable>
PrimitiveToBoxedClass	Converts a Class<primitive> to it's corresponding Class<Boxed>, eg Class<int> to Class<Integer>
SchemaCompatibilityValidator	Inspects the column types found in the provided FilterPredicate and compares them to the actual schema found in the parquet file.
Statistics<T>	Contains statistics about a group of records
UserDefinedPredicate<T extends Comparable<T>>	A UserDefinedPredicate decides whether a record should be kept or dropped, first by inspecting meta data about a group of records to see if the entire group can be dropped, then by inspecting actual values of a single column.
ValidTypeMap	Contains all valid mappings from class -> parquet type (and vice versa) for use in FilterPredicates This is a bit ugly, but it allows us to provide good error messages at runtime when there are type mismatches.