Class ExternalTranslator

java.lang.Object

org.apache.tika.language.translate.impl.AbstractTranslator

org.apache.tika.language.translate.impl.ExternalTranslator

All Implemented Interfaces:

Translator

Direct Known Subclasses:

MosesTranslator

public abstract class ExternalTranslator
extends AbstractTranslator

Abstract class used to interact with command line/external Translators.

Since:

Tika 1.7

See Also:

• for an example of extending this class.

Constructor Summary

Constructors

Constructor	Description
ExternalTranslator()

Method Summary

Modifier and Type	Method	Description
boolean	checkCommand(String checkCommandString, int... successCodes)	Checks to see if the command can be run.
Reader	runAndGetOutput(String command, String[] env, File workingDirectory)	Run the given command and return the output written to standard out.
String	translate(String text, String targetLanguage)	Default translate method which uses built Tika language identification.

Methods inherited from class AbstractTranslator

detectLanguage

Methods inherited from class Object

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

Methods inherited from interface Translator

isAvailable, translate

Constructor Details

ExternalTranslator

public ExternalTranslator()

Method Details

runAndGetOutput

public Reader runAndGetOutput(String command,
 String[] env,
 File workingDirectory)
                       throws IOException,
InterruptedException

Run the given command and return the output written to standard out.

Parameters:

command - The complete command to run.

env - The environment to pass along to the Runtime.

workingDirectory - The directory from which to run the command.

Returns:

The output of the command written to standard out.

Throws:

IOException

InterruptedException

checkCommand

public boolean checkCommand(String checkCommandString,
 int... successCodes)

Checks to see if the command can be run. Typically used with something like "myapp --version" to check to see if "myapp" is installed and on the path.

Parameters:

checkCommandString - The command to run and check the return code of.

successCodes - Return codes that signify success.

translate

public String translate(String text,
 String targetLanguage)
                 throws TikaException,
IOException

Default translate method which uses built Tika language identification.

Parameters:

text - The text to translate.

targetLanguage - The desired language to translate to (for example, "hi").

Returns:

The translated text.

Throws:

Exception

TikaException - When there is an error translating.

IOException