Package com.d3x.morpheus.json

Class JsonSource

java.lang.Object

com.d3x.morpheus.json.JsonSource

public class JsonSource
extends java.lang.Object

A source used to load a DataFrame from JSON content

This is open source software released under the Apache 2.0 License

Author:

Xavier Witdouck

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	JsonSource.Options<R,C>	The options for this source

Constructor Summary

Constructors

Constructor	Description
JsonSource()

Method Summary

Modifier and Type	Method	Description
private <R,C> com.d3x.morpheus.frame.DataFrame<R,C>	createFrame(JsonSource.Options<R,C> options)	Returns a newly created DataFrame from the contents that has been read from JSON
private java.util.Map<java.lang.String,java.lang.Class<?>>	getTypeMap(com.d3x.morpheus.util.text.Formats formats)	Returns the type apply from the formats
<R,C> com.d3x.morpheus.frame.DataFrame<R,C>	read(java.io.File file)	Returns a DataFrame loaded from JSON in the resource specified
<R,C> com.d3x.morpheus.frame.DataFrame<R,C>	read(java.io.InputStream is)	Returns a DataFrame loaded from JSON in the resource specified
<R,C> com.d3x.morpheus.frame.DataFrame<R,C>	read(java.lang.String resource)	Returns a DataFrame loaded from JSON in the resource specified
<R,C> com.d3x.morpheus.frame.DataFrame<R,C>	read(java.net.URL url)	Returns a DataFrame loaded from JSON in the resource specified
<R,C> com.d3x.morpheus.frame.DataFrame<R,C>	read(java.util.function.Consumer<JsonSource.Options<R,C>> configurator)	Returns a DataFrame loaded from JSON as specified by the options
private <R,C> void	readColumns(JsonSource.Options<R,C> options, int rowCount, int colCount)	Reads the column data from JSON and returs a apply of column data by key
private <R,C> void	readRowKeys(JsonSource.Options<R,C> options, int rowCount)	Reads row keys from the stream

Methods inherited from class java.lang.Object

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

Constructor Detail

JsonSource

public JsonSource()

Method Detail

read

public <R,C> com.d3x.morpheus.frame.DataFrame<R,C> read(java.io.File file)
                                                 throws com.d3x.morpheus.frame.DataFrameException

Returns a DataFrame loaded from JSON in the resource specified

Parameters:

file - the resource to load from

Returns:

the loaded DataFrame

Throws:

com.d3x.morpheus.frame.DataFrameException - if frame fails to load from json

read

public <R,C> com.d3x.morpheus.frame.DataFrame<R,C> read(java.net.URL url)
                                                 throws com.d3x.morpheus.frame.DataFrameException

Returns a DataFrame loaded from JSON in the resource specified

Parameters:

url - the resource to load from

Returns:

the loaded DataFrame

Throws:

com.d3x.morpheus.frame.DataFrameException - if frame fails to load from json

read

public <R,C> com.d3x.morpheus.frame.DataFrame<R,C> read(java.io.InputStream is)
                                                 throws com.d3x.morpheus.frame.DataFrameException

Returns a DataFrame loaded from JSON in the resource specified

Parameters:

is - the resource to load from

Returns:

the loaded DataFrame

Throws:

com.d3x.morpheus.frame.DataFrameException - if frame fails to load from json

read

public <R,C> com.d3x.morpheus.frame.DataFrame<R,C> read(java.lang.String resource)
                                                 throws com.d3x.morpheus.frame.DataFrameException

Returns a DataFrame loaded from JSON in the resource specified

Parameters:

resource - the resource to load from

Returns:

the loaded DataFrame

Throws:

com.d3x.morpheus.frame.DataFrameException - if frame fails to load from json

read

public <R,C> com.d3x.morpheus.frame.DataFrame<R,C> read(java.util.function.Consumer<JsonSource.Options<R,C>> configurator)
                                                 throws com.d3x.morpheus.frame.DataFrameException

Returns a DataFrame loaded from JSON as specified by the options

Parameters:

configurator - the options configurator

Returns:

the loaded DataFrame

Throws:

com.d3x.morpheus.frame.DataFrameException - if frame fails to load from json

createFrame

private <R,C> com.d3x.morpheus.frame.DataFrame<R,C> createFrame(JsonSource.Options<R,C> options)

Returns a newly created DataFrame from the contents that has been read from JSON

Parameters:

options - the json options

Returns:

the newly created DataFrame

readRowKeys

private <R,C> void readRowKeys(JsonSource.Options<R,C> options,
                               int rowCount)

Reads row keys from the stream

Parameters:

options - the json options

rowCount - the row count for frame

readColumns

private <R,C> void readColumns(JsonSource.Options<R,C> options,
                               int rowCount,
                               int colCount)

Reads the column data from JSON and returs a apply of column data by key

Parameters:

rowCount - the row count

colCount - the column count

getTypeMap

private java.util.Map<java.lang.String,java.lang.Class<?>> getTypeMap(com.d3x.morpheus.util.text.Formats formats)

Returns the type apply from the formats

Parameters:

formats - the formats

Returns:

the type apply