hex.genmodel

Class ModelMojoReader<M extends MojoModel>

java.lang.Object

hex.genmodel.ModelMojoReader<M>

Direct Known Subclasses:

DeepwaterMojoReader, GlrmMojoReader, SharedTreeMojoReader

public abstract class ModelMojoReader<M extends MojoModel>
extends java.lang.Object

Helper class to deserialize a model from MOJO format. This is a counterpart to `ModelMojoWriter`.

Field Summary

Fields

Modifier and Type	Field and Description
protected M	_model

Constructor Summary

Constructors

Constructor and Description
ModelMojoReader()

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract M	makeModel(java.lang.String[] columns, java.lang.String[][] domains)
protected byte[]	readblob(java.lang.String name) Retrieve binary data previously saved to the mojo file using `writeblob(key, blob)`.
static MojoModel	readFrom(MojoReaderBackend reader)
protected <T> T	readkv(java.lang.String key) Retrieve value from the model's kv store which was previously put there using `writekv(key, value)`.
protected abstract void	readModelData()
protected java.lang.Iterable<java.lang.String>	readtext(java.lang.String name) Retrieve text previously saved using `startWritingTextFile` + `writeln` as an array of lines.

Methods inherited from class java.lang.Object

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

Field Detail

_model

protected M extends MojoModel _model

Constructor Detail

ModelMojoReader

public ModelMojoReader()

Method Detail

readFrom

public static MojoModel readFrom(MojoReaderBackend reader)
                          throws java.io.IOException

Throws:

java.io.IOException

readModelData

protected abstract void readModelData()
                               throws java.io.IOException

Throws:

java.io.IOException

makeModel

protected abstract M makeModel(java.lang.String[] columns,
          java.lang.String[][] domains)

readkv

protected <T> T readkv(java.lang.String key)

Retrieve value from the model's kv store which was previously put there using `writekv(key, value)`. We will attempt to cast to your expected type, but this is obviously unsafe. Note that the value is deserialized from the underlying string representation using ParseUtils.tryParse(String), which occasionally may get the answer wrong. If the `key` is missing in the local kv store, null will be returned. However when assigning to a primitive type this would result in an NPE, so beware.

readblob

protected byte[] readblob(java.lang.String name)
                   throws java.io.IOException

Retrieve binary data previously saved to the mojo file using `writeblob(key, blob)`.

Throws:

java.io.IOException

readtext

protected java.lang.Iterable<java.lang.String> readtext(java.lang.String name)
                                                 throws java.io.IOException

Retrieve text previously saved using `startWritingTextFile` + `writeln` as an array of lines. Each line is trimmed to remove the leading and trailing whitespace.

Throws:

java.io.IOException