Class ProcessBuilderNative

java.lang.Object

org.aksw.shellgebra.processbuilder.ProcessBuilderCore<ProcessBuilderNative>

org.aksw.shellgebra.processbuilder.ProcessBuilderBase<ProcessBuilderNative>

org.aksw.vshell.registry.ProcessBuilderNative

All Implemented Interfaces:

Cloneable, IProcessBuilder<ProcessBuilderNative>, IProcessBuilderCore<ProcessBuilderNative>

public class ProcessBuilderNative
extends ProcessBuilderBase<ProcessBuilderNative>

Constructor Summary

Constructors

Constructor	Description
ProcessBuilderNative()

Method Summary

Modifier and Type	Method	Description
boolean	accessesStdIn()	Whether the configured command will read from stdin.
protected ProcessBuilderNative	cloneActual()
static ProcessBuilder	configure(ProcessBuilder tgt, IProcessBuilderCore<?> src, ProcessRunner cxt)
static ProcessBuilderNative	of(String... command)
Process	start(ProcessRunner executor)
boolean	supportsAnonPipeRead()	Whether the process builder can read from anonymous pipes.
boolean	supportsAnonPipeWrite()	Whether the process builder can write to an anonymous pipe.
boolean	supportsDirectNamedPipe()	Whether a named pipe can be used with the process builder without risking blocking due to multiple connections being made to it.

Methods inherited from class ProcessBuilderBase

applySettings, clone, command, command, command

Methods inherited from class ProcessBuilderCore

applySettings, directory, directory, environment, redirectError, redirectError, redirectErrorStream, redirectErrorStream, redirectInput, redirectInput, redirectOutput, redirectOutput, self

Methods inherited from class Object

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

Methods inherited from interface IProcessBuilderCore

directory, directory, environment, redirectError, redirectError, redirectErrorStream, redirectErrorStream, redirectInput, redirectInput, redirectOutput, redirectOutput

Constructor Details

ProcessBuilderNative

public ProcessBuilderNative()

Method Details

of

public static ProcessBuilderNative of(String... command)

start

public Process start(ProcessRunner executor)
              throws IOException

Throws:

IOException

configure

public static ProcessBuilder configure(ProcessBuilder tgt,
 IProcessBuilderCore<?> src,
 ProcessRunner cxt)

cloneActual

protected ProcessBuilderNative cloneActual()

Specified by:

cloneActual in class ProcessBuilderCore<ProcessBuilderNative>

supportsAnonPipeRead

public boolean supportsAnonPipeRead()

Description copied from interface: IProcessBuilderCore

Whether the process builder can read from anonymous pipes. Docker containers can only bind-mount named pipes but not anonymous pipes. When building pipelines, this flag is used to avoid needless intermediate anon pipes where named ones can be used directly. For pipelines, this is the value of the first process builder.

supportsAnonPipeWrite

public boolean supportsAnonPipeWrite()

Description copied from interface: IProcessBuilderCore

Whether the process builder can write to an anonymous pipe. Docker containers can only bind-mount named pipes but not anonymous pipes. When building pipelines, this flag is used to avoid needless intermediate anon pipes where named ones can be used directly. For pipelines, this is the value of the last process builder.

supportsDirectNamedPipe

public boolean supportsDirectNamedPipe()

Description copied from interface: IProcessBuilderCore

Whether a named pipe can be used with the process builder without risking blocking due to multiple connections being made to it. This method must only return true if only a single connection to that pipe will be openend. A process builder for host or docker may return true. But a group with two or more 'true-returning' members will return false.

accessesStdIn

public boolean accessesStdIn()

Description copied from interface: IProcessBuilderCore

Whether the configured command will read from stdin. Used to avoid generation of needless named or anon pipes such as in "echo foo | echo bar": where the second link does not read the data from the prior link.