Index

C D G O R S W
All Classes and Interfaces|All Packages

C

collect(BufferAllocator) - Method in interface org.apache.arrow.datafusion.DataFrame

Collect dataframe into a list of record batches

create() - Static method in class org.apache.arrow.datafusion.SessionContexts

D

DataFrame - Interface in org.apache.arrow.datafusion

A dataframe is a rectangle shaped data that holds columns and rows, and can be collected into batches and read via reader.

G

getPointer() - Method in interface org.apache.arrow.datafusion.Runtime

getRuntime() - Method in interface org.apache.arrow.datafusion.SessionContext

Get the runtime associated with this context

O

org.apache.arrow.datafusion - package org.apache.arrow.datafusion

This module contains a Java JNI binding to Apache Arrow DataFusion which is the query engine library to work with data in Arrow format.

R

registerCsv(String, Path) - Method in interface org.apache.arrow.datafusion.SessionContext

Registering a csv file with the context

registerParquet(String, Path) - Method in interface org.apache.arrow.datafusion.SessionContext

Registering a parquet file with the context

Runtime - Interface in org.apache.arrow.datafusion

A runtime represents the underlying async runtime in datafusion engine

S

SessionContext - Interface in org.apache.arrow.datafusion

A session context holds resources and is the entrance for obtaining DataFrame

SessionContexts - Class in org.apache.arrow.datafusion

show() - Method in interface org.apache.arrow.datafusion.DataFrame

Print results.

sql(String) - Method in interface org.apache.arrow.datafusion.SessionContext

Obtain the DataFrame by running the sql against the datafusion library

W

writeCsv(Path) - Method in interface org.apache.arrow.datafusion.DataFrame

Write results to a csv file.

writeParquet(Path) - Method in interface org.apache.arrow.datafusion.DataFrame

Write results to a parquet file.

C D G O R S W
All Classes and Interfaces|All Packages