io.delta.kernel.internal.data

Class PojoColumnarBatch<POJO_TYPE>

java.lang.Object

io.delta.kernel.internal.data.PojoColumnarBatch<POJO_TYPE>

All Implemented Interfaces:

ColumnarBatch

Direct Known Subclasses:

AddFileColumnarBatch

public class PojoColumnarBatch<POJO_TYPE>
extends java.lang.Object
implements ColumnarBatch

Exposes a given a list of POJO objects and their schema as a ColumnarBatch.

Constructor Summary

Constructors

Constructor and Description
PojoColumnarBatch(java.util.List<POJO_TYPE> pojoObjects, StructType schema, java.util.Map<java.lang.Integer,java.util.function.Function<POJO_TYPE,java.lang.Object>> ordinalToAccessor, java.util.Map<java.lang.Integer,java.lang.String> ordinalToColName)

Method Summary

Modifier and Type	Method and Description
ColumnVector	getColumnVector(int ordinal) Return the ColumnVector for the given ordinal in the columnar batch.
StructType	getSchema()
int	getSize()

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.delta.kernel.data.ColumnarBatch

getRows, slice, withDeletedColumnAt, withNewColumn, withNewSchema

Constructor Detail

PojoColumnarBatch

public PojoColumnarBatch(java.util.List<POJO_TYPE> pojoObjects,
                         StructType schema,
                         java.util.Map<java.lang.Integer,java.util.function.Function<POJO_TYPE,java.lang.Object>> ordinalToAccessor,
                         java.util.Map<java.lang.Integer,java.lang.String> ordinalToColName)

Method Detail

getSchema

public StructType getSchema()

Specified by:

getSchema in interface ColumnarBatch

Returns:

the schema of the data in this batch.

getColumnVector

public ColumnVector getColumnVector(int ordinal)

Description copied from interface: ColumnarBatch

Return the ColumnVector for the given ordinal in the columnar batch. If the ordinal is not valid throws error.

Specified by:

getColumnVector in interface ColumnarBatch

Parameters:

ordinal - the ordinal of the column to retrieve

Returns:

the ColumnVector for the given ordinal in the columnar batch

getSize

public int getSize()

Specified by:

getSize in interface ColumnarBatch

Returns:

the number of rows/records in the columnar batch