org.apache.sysds.runtime.util

## Class ProgramConverter

- java.lang.Object
- - org.apache.sysds.runtime.util.ProgramConverter

-     public class ProgramConverter
      extends Object

  Program converter functionalities for (1) creating deep copies of program blocks, instructions, function program blocks, and (2) serializing and parsing of programs, program blocks, functions program blocks.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static String` | `CDATA_BEGIN`
    `static String` | `CDATA_END`
    `static String` | `COMPONENTS_DELIM`
    `static String` | `CONF_STATS`
    `static String` | `DASH`
    `static String` | `DATA_FIELD_DELIM`
    `static String` | `EC_BEGIN`
    `static String` | `EC_END`
    `static String` | `ELEMENT_DELIM`
    `static String` | `ELEMENT_DELIM2`
    `static String` | `EMPTY`
    `static String` | `INST_BEGIN`
    `static String` | `INST_END`
    `static String` | `KEY_VALUE_DELIM`
    `static String` | `LEVELIN`
    `static String` | `LEVELOUT`
    `static String` | `LIST_ELEMENT_DELIM`
    `static String` | `NEWLINE`
    `static String` | `NOT_SUPPORTED_EXTERNALFUNCTION_PB`
    `static String` | `NOT_SUPPORTED_PB`
    `static String` | `NOT_SUPPORTED_SPARK_INSTRUCTION`
    `static String` | `NOT_SUPPORTED_SPARK_PARFOR`
    `static String` | `PARFORBODY_BEGIN`
    `static String` | `PARFORBODY_END`
    `static String` | `PB_BEGIN`
    `static String` | `PB_EFC`
    `static String` | `PB_END`
    `static String` | `PB_FC`
    `static String` | `PB_FOR`
    `static String` | `PB_IF`
    `static String` | `PB_PARFOR`
    `static String` | `PB_WHILE`
    `static String` | `PBS_BEGIN`
    `static String` | `PBS_END`
    `static String` | `PROG_BEGIN`
    `static String` | `PROG_END`
    `static String` | `PSBODY_BEGIN`
    `static String` | `PSBODY_END`
    `static String` | `REF`
    `static String` | `VARS_BEGIN`
    `static String` | `VARS_END`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `ProgramConverter()`

  - ### Method Summary

    All Methods Static Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `static Instruction` | `cloneInstruction(Instruction oInst, long pid, boolean plain, boolean cpFunctions)`
    `static ExecutionContext` | `createDeepCopyExecutionContext(ExecutionContext ec)` Creates a deep copy of the given execution context.
    `static ForProgramBlock` | `createDeepCopyForProgramBlock(ForProgramBlock fpb, long pid, int IDPrefix, Program prog, Set<String> fnStack, Set<String> fnCreated, boolean plain, boolean forceDeepCopy)`
    `static FunctionProgramBlock` | `createDeepCopyFunctionProgramBlock(FunctionProgramBlock fpb, Set<String> fnStack, Set<String> fnCreated)`
    `static void` | `createDeepCopyFunctionProgramBlock(String namespace, String oldName, long pid, int IDPrefix, Program prog, Set<String> fnStack, Set<String> fnCreated, boolean plain)` This creates a deep copy of a function program block.
    `static FunctionStatementBlock` | `createDeepCopyFunctionStatementBlock(FunctionStatementBlock fsb, Set<String> fnStack, Set<String> fnCreated)`
    `static IfProgramBlock` | `createDeepCopyIfProgramBlock(IfProgramBlock ipb, long pid, int IDPrefix, Program prog, Set<String> fnStack, Set<String> fnCreated, boolean plain, boolean forceDeepCopy)`
    `static ArrayList<Instruction>` | `createDeepCopyInstructionSet(ArrayList<Instruction> instSet, long pid, int IDPrefix, Program prog, Set<String> fnStack, Set<String> fnCreated, boolean plain, boolean cpFunctions)` Creates a deep copy of an array of instructions and replaces the placeholders of parworker IDs with the concrete IDs of this parfor instance.
    `static ParForProgramBlock` | `createDeepCopyParForProgramBlock(ParForProgramBlock pfpb, long pid, int IDPrefix, Program prog, Set<String> fnStack, Set<String> fnCreated, boolean plain, boolean forceDeepCopy)`
    `static WhileProgramBlock` | `createDeepCopyWhileProgramBlock(WhileProgramBlock wpb, long pid, int IDPrefix, Program prog, Set<String> fnStack, Set<String> fnCreated, boolean plain, boolean forceDeepCopy)`
    `static ForStatementBlock` | `createForStatementBlockCopy(ForStatementBlock sb, boolean forceDeepCopy)`
    `static IfStatementBlock` | `createIfStatementBlockCopy(IfStatementBlock sb, boolean forceDeepCopy)`
    `static ForProgramBlock` | `createShallowCopyForProgramBlock(ForProgramBlock fpb, Program prog)`
    `static StatementBlock` | `createStatementBlockCopy(StatementBlock sb, long pid, boolean plain, boolean forceDeepCopy)`
    `static WhileStatementBlock` | `createWhileStatementBlockCopy(WhileStatementBlock sb, boolean forceDeepCopy)`
    `static Object[]` | `parseDataObject(String in)` NOTE: MRJobConfiguration cannot be used for the general case because program blocks and related symbol tables can be hierarchically structured.
    `static ParForBody` | `parseParForBody(String in, int id)`
    `static ParForBody` | `parseParForBody(String in, int id, boolean inSpark)`
    `static Program` | `parseProgram(String in, int id)`
    `static SparkPSBody` | `parseSparkPSBody(String in, int id)`
    `static ArrayList<ProgramBlock>` | `rcreateDeepCopyProgramBlocks(ArrayList<ProgramBlock> childBlocks, long pid, int IDPrefix, Set<String> fnStack, Set<String> fnCreated, boolean plain, boolean forceDeepCopy)` This recursively creates a deep copy of program blocks and transparently replaces filenames according to the specified parallel worker in order to avoid conflicts between parworkers.
    `static StatementBlock` | `rCreateDeepCopyStatementBlock(StatementBlock sb)`
    `static String` | `saveReplaceFilenameThreadID(String fname, String pattern, String replace)`
    `static String` | `serializeDataObject(String key, Data dat)`
    `static String` | `serializeList(List<String> elements)`
    `static String` | `serializeList(List<String> elements, String delim)`
    `static String` | `serializeParForBody(ParForBody body)`
    `static String` | `serializeParForBody(ParForBody body, HashMap<String,byte[]> clsMap)`
    `static String` | `serializeResultVariables(List<ParForStatementBlock.ResultVar> vars)`
    `static String` | `serializeSparkPSBody(SparkPSBody body, HashMap<String,byte[]> clsMap)`

    - ### Methods inherited from class java.lang.Object

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

- - ### Field Detail

    - #### NEWLINE

          public static final String NEWLINE

      See Also:
        Constant Field Values

    - #### COMPONENTS_DELIM

          public static final String COMPONENTS_DELIM

      See Also:
        Constant Field Values

    - #### ELEMENT_DELIM

          public static final String ELEMENT_DELIM

      See Also:
        Constant Field Values

    - #### ELEMENT_DELIM2

          public static final String ELEMENT_DELIM2

      See Also:
        Constant Field Values

    - #### DATA_FIELD_DELIM

          public static final String DATA_FIELD_DELIM

      See Also:
        Constant Field Values

    - #### KEY_VALUE_DELIM

          public static final String KEY_VALUE_DELIM

      See Also:
        Constant Field Values

    - #### LEVELIN

          public static final String LEVELIN

      See Also:
        Constant Field Values

    - #### LEVELOUT

          public static final String LEVELOUT

      See Also:
        Constant Field Values

    - #### EMPTY

          public static final String EMPTY

      See Also:
        Constant Field Values

    - #### DASH

          public static final String DASH

      See Also:
        Constant Field Values

    - #### REF

          public static final String REF

      See Also:
        Constant Field Values

    - #### LIST_ELEMENT_DELIM

          public static final String LIST_ELEMENT_DELIM

      See Also:
        Constant Field Values

    - #### CDATA_BEGIN

          public static final String CDATA_BEGIN

      See Also:
        Constant Field Values

    - #### CDATA_END

          public static final String CDATA_END

      See Also:
        Constant Field Values

    - #### PROG_BEGIN

          public static final String PROG_BEGIN

      See Also:
        Constant Field Values

    - #### PROG_END

          public static final String PROG_END

      See Also:
        Constant Field Values

    - #### VARS_BEGIN

          public static final String VARS_BEGIN

      See Also:
        Constant Field Values

    - #### VARS_END

          public static final String VARS_END

      See Also:
        Constant Field Values

    - #### PBS_BEGIN

          public static final String PBS_BEGIN

      See Also:
        Constant Field Values

    - #### PBS_END

          public static final String PBS_END

      See Also:
        Constant Field Values

    - #### INST_BEGIN

          public static final String INST_BEGIN

      See Also:
        Constant Field Values

    - #### INST_END

          public static final String INST_END

      See Also:
        Constant Field Values

    - #### EC_BEGIN

          public static final String EC_BEGIN

      See Also:
        Constant Field Values

    - #### EC_END

          public static final String EC_END

      See Also:
        Constant Field Values

    - #### PB_BEGIN

          public static final String PB_BEGIN

      See Also:
        Constant Field Values

    - #### PB_END

          public static final String PB_END

      See Also:
        Constant Field Values

    - #### PB_WHILE

          public static final String PB_WHILE

      See Also:
        Constant Field Values

    - #### PB_FOR

          public static final String PB_FOR

      See Also:
        Constant Field Values

    - #### PB_PARFOR

          public static final String PB_PARFOR

      See Also:
        Constant Field Values

    - #### PB_IF

          public static final String PB_IF

      See Also:
        Constant Field Values

    - #### PB_FC

          public static final String PB_FC

      See Also:
        Constant Field Values

    - #### PB_EFC

          public static final String PB_EFC

      See Also:
        Constant Field Values

    - #### CONF_STATS

          public static final String CONF_STATS

      See Also:
        Constant Field Values

    - #### PARFORBODY_BEGIN

          public static final String PARFORBODY_BEGIN

      See Also:
        Constant Field Values

    - #### PARFORBODY_END

          public static final String PARFORBODY_END

      See Also:
        Constant Field Values

    - #### PSBODY_BEGIN

          public static final String PSBODY_BEGIN

      See Also:
        Constant Field Values

    - #### PSBODY_END

          public static final String PSBODY_END

      See Also:
        Constant Field Values

    - #### NOT_SUPPORTED_EXTERNALFUNCTION_PB

          public static final String NOT_SUPPORTED_EXTERNALFUNCTION_PB

      See Also:
        Constant Field Values

    - #### NOT_SUPPORTED_SPARK_INSTRUCTION

          public static final String NOT_SUPPORTED_SPARK_INSTRUCTION

      See Also:
        Constant Field Values

    - #### NOT_SUPPORTED_SPARK_PARFOR

          public static final String NOT_SUPPORTED_SPARK_PARFOR

      See Also:
        Constant Field Values

    - #### NOT_SUPPORTED_PB

          public static final String NOT_SUPPORTED_PB

      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### ProgramConverter

          public ProgramConverter()

  - ### Method Detail

    - #### createDeepCopyExecutionContext

          public static ExecutionContext createDeepCopyExecutionContext(ExecutionContext ec)
                                                                 throws CloneNotSupportedException

      Creates a deep copy of the given execution context. For rt_platform=Hadoop, execution context has a symbol table.
      Parameters:
        `ec` - execution context
      Returns:
        execution context
      Throws:
        `CloneNotSupportedException` - if CloneNotSupportedException occurs

    - #### rcreateDeepCopyProgramBlocks

          public static ArrayList<ProgramBlock> rcreateDeepCopyProgramBlocks(ArrayList<ProgramBlock> childBlocks,
                                                                             long pid,
                                                                             int IDPrefix,
                                                                             Set<String> fnStack,
                                                                             Set<String> fnCreated,
                                                                             boolean plain,
                                                                             boolean forceDeepCopy)

      This recursively creates a deep copy of program blocks and transparently replaces filenames according to the specified parallel worker in order to avoid conflicts between parworkers. This happens recursively in order to support arbitrary control-flow constructs within a parfor.
      Parameters:
        `childBlocks` - child program blocks
        `pid` - ?
        `IDPrefix` - ?
        `fnStack` - ?
        `fnCreated` - ?
        `plain` - if true, full deep copy without id replacement
        `forceDeepCopy` - if true, force deep copy
      Returns:
        list of program blocks

    - #### createDeepCopyWhileProgramBlock

          public static WhileProgramBlock createDeepCopyWhileProgramBlock(WhileProgramBlock wpb,
                                                                          long pid,
                                                                          int IDPrefix,
                                                                          Program prog,
                                                                          Set<String> fnStack,
                                                                          Set<String> fnCreated,
                                                                          boolean plain,
                                                                          boolean forceDeepCopy)

    - #### createDeepCopyIfProgramBlock

          public static IfProgramBlock createDeepCopyIfProgramBlock(IfProgramBlock ipb,
                                                                    long pid,
                                                                    int IDPrefix,
                                                                    Program prog,
                                                                    Set<String> fnStack,
                                                                    Set<String> fnCreated,
                                                                    boolean plain,
                                                                    boolean forceDeepCopy)

    - #### createDeepCopyForProgramBlock

          public static ForProgramBlock createDeepCopyForProgramBlock(ForProgramBlock fpb,
                                                                      long pid,
                                                                      int IDPrefix,
                                                                      Program prog,
                                                                      Set<String> fnStack,
                                                                      Set<String> fnCreated,
                                                                      boolean plain,
                                                                      boolean forceDeepCopy)

    - #### createShallowCopyForProgramBlock

          public static ForProgramBlock createShallowCopyForProgramBlock(ForProgramBlock fpb,
                                                                         Program prog)

    - #### createDeepCopyParForProgramBlock

          public static ParForProgramBlock createDeepCopyParForProgramBlock(ParForProgramBlock pfpb,
                                                                            long pid,
                                                                            int IDPrefix,
                                                                            Program prog,
                                                                            Set<String> fnStack,
                                                                            Set<String> fnCreated,
                                                                            boolean plain,
                                                                            boolean forceDeepCopy)

    - #### createDeepCopyFunctionProgramBlock

          public static void createDeepCopyFunctionProgramBlock(String namespace,
                                                                String oldName,
                                                                long pid,
                                                                int IDPrefix,
                                                                Program prog,
                                                                Set<String> fnStack,
                                                                Set<String> fnCreated,
                                                                boolean plain)

      This creates a deep copy of a function program block. The central reference to singletons of function program blocks poses the need for explicit copies in order to prevent conflicting writes of temporary variables (see ExternalFunctionProgramBlock.
      Parameters:
        `namespace` - function namespace
        `oldName` - ?
        `pid` - ?
        `IDPrefix` - ?
        `prog` - runtime program
        `fnStack` - ?
        `fnCreated` - ?
        `plain` - ?

    - #### createDeepCopyFunctionProgramBlock

          public static FunctionProgramBlock createDeepCopyFunctionProgramBlock(FunctionProgramBlock fpb,
                                                                                Set<String> fnStack,
                                                                                Set<String> fnCreated)

    - #### createDeepCopyInstructionSet

          public static ArrayList<Instruction> createDeepCopyInstructionSet(ArrayList<Instruction> instSet,
                                                                            long pid,
                                                                            int IDPrefix,
                                                                            Program prog,
                                                                            Set<String> fnStack,
                                                                            Set<String> fnCreated,
                                                                            boolean plain,
                                                                            boolean cpFunctions)

      Creates a deep copy of an array of instructions and replaces the placeholders of parworker IDs with the concrete IDs of this parfor instance. This is a helper method uses for generating deep copies of program blocks.
      Parameters:
        `instSet` - list of instructions
        `pid` - ?
        `IDPrefix` - ?
        `prog` - runtime program
        `fnStack` - ?
        `fnCreated` - ?
        `plain` - ?
        `cpFunctions` - ?
      Returns:
        list of instructions

    - #### cloneInstruction

          public static Instruction cloneInstruction(Instruction oInst,
                                                     long pid,
                                                     boolean plain,
                                                     boolean cpFunctions)

    - #### createDeepCopyFunctionStatementBlock

          public static FunctionStatementBlock createDeepCopyFunctionStatementBlock(FunctionStatementBlock fsb,
                                                                                    Set<String> fnStack,
                                                                                    Set<String> fnCreated)

    - #### rCreateDeepCopyStatementBlock

          public static StatementBlock rCreateDeepCopyStatementBlock(StatementBlock sb)

    - #### createStatementBlockCopy

          public static StatementBlock createStatementBlockCopy(StatementBlock sb,
                                                                long pid,
                                                                boolean plain,
                                                                boolean forceDeepCopy)

    - #### createIfStatementBlockCopy

          public static IfStatementBlock createIfStatementBlockCopy(IfStatementBlock sb,
                                                                    boolean forceDeepCopy)

    - #### createWhileStatementBlockCopy

          public static WhileStatementBlock createWhileStatementBlockCopy(WhileStatementBlock sb,
                                                                          boolean forceDeepCopy)

    - #### createForStatementBlockCopy

          public static ForStatementBlock createForStatementBlockCopy(ForStatementBlock sb,
                                                                      boolean forceDeepCopy)

    - #### serializeSparkPSBody

          public static String serializeSparkPSBody(SparkPSBody body,
                                                    HashMap<String,byte[]> clsMap)

    - #### serializeParForBody

          public static String serializeParForBody(ParForBody body)

    - #### serializeParForBody

          public static String serializeParForBody(ParForBody body,
                                                   HashMap<String,byte[]> clsMap)

    - #### serializeDataObject

          public static String serializeDataObject(String key,
                                                   Data dat)

    - #### serializeResultVariables

          public static String serializeResultVariables(List<ParForStatementBlock.ResultVar> vars)

    - #### serializeList

          public static String serializeList(List<String> elements)

    - #### serializeList

          public static String serializeList(List<String> elements,
                                             String delim)

    - #### parseSparkPSBody

          public static SparkPSBody parseSparkPSBody(String in,
                                                     int id)

    - #### parseParForBody

          public static ParForBody parseParForBody(String in,
                                                   int id)

    - #### parseParForBody

          public static ParForBody parseParForBody(String in,
                                                   int id,
                                                   boolean inSpark)

    - #### parseProgram

          public static Program parseProgram(String in,
                                             int id)

    - #### parseDataObject

          public static Object[] parseDataObject(String in)

      NOTE: MRJobConfiguration cannot be used for the general case because program blocks and related symbol tables can be hierarchically structured.
      Parameters:
        `in` - data object as string
      Returns:
        array of objects

    - #### saveReplaceFilenameThreadID

          public static String saveReplaceFilenameThreadID(String fname,
                                                           String pattern,
                                                           String replace)

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