Class JSONSplitter.Visitor<T extends AbstractWriteHandle>

Type Parameters:

T - The type of the handle used for each split

Direct Known Subclasses:

JSONSplitter.ArrayVisitor

Enclosing class:

JSONSplitter<T extends JSONWriteHandle>

• Constructor Summary

  Constructors
  Constructor

  Description

  Visitor()

   

• Method Summary

  All MethodsInstance MethodsAbstract MethodsConcrete Methods

  Modifier and Type

  Method

  Description

  void

  endArray(String containerKey)

  Receives a notification when hitting end of array.

  void

  endObject(String containerKey)

  Receives a notification when hitting the end of current object.

  abstract T

  makeBufferedHandle(com.fasterxml.jackson.core.JsonParser containerParser)

  Construct buffered content handles with proper types from JsonParser.

  DocumentWriteOperation

  makeDocumentWriteOperation(JSONSplitter.UriMaker uriMaker, long count, T handle)

  Construct buffered DocumentWriteOperations from the handle which contains target content

  String

  serialize(com.fasterxml.jackson.core.JsonParser containerParser)

  Serialize the target object or array in JsonParser to Strings.

  NodeOperation

  startArray(String containerKey)

  This method inspects the state of the current array and decides whether to split it or not.

  NodeOperation

  startObject(String containerKey)

  This method inspects the state of the current object and decides whether to split it or not.

  Methods inherited from class java.lang.Object

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

• Constructor Details

  • Visitor

    public Visitor()

• Method Details

  • startObject

    public NodeOperation startObject(String containerKey)
    This method inspects the state of the current object and decides whether to split it or not. This method can be overridden to accumulate and inspect state during the depth-first traversal of the JSON tree and make the decision of whether to split.

    Parameters:

    containerKey - The key of the object which the value contains current object

    Returns:

    different operations to either process current object, go down the JSON tree or skip current object

  • endObject

    public void endObject(String containerKey)
    Receives a notification when hitting the end of current object.

    Parameters:

    containerKey - The key of the object which the value contains current object

  • startArray

    public NodeOperation startArray(String containerKey)
    This method inspects the state of the current array and decides whether to split it or not. This method can be overridden to accumulate and inspect state during the depth-first traversal of the JSON tree and make the decision of whether to split.

    Parameters:

    containerKey - The key of the object which the value contains current array

    Returns:

    different operations to either process current array, go down the JSON tree or skip current array

  • endArray

    public void endArray(String containerKey)
    Receives a notification when hitting end of array.

    Parameters:

    containerKey - The key of the object which the value contains current array

  • makeBufferedHandle

    public abstract T makeBufferedHandle(com.fasterxml.jackson.core.JsonParser containerParser)
    Construct buffered content handles with proper types from JsonParser.

    Parameters:

    containerParser - the JsonParser with target object or array

    Returns:

    the handle with target object or array as content

  • makeDocumentWriteOperation

    public DocumentWriteOperation makeDocumentWriteOperation(JSONSplitter.UriMaker uriMaker, long count, T handle)
    Construct buffered DocumentWriteOperations from the handle which contains target content

    Parameters:

    uriMaker - the UriMake to construct the URI for each document

    count - the count of each split

    handle - the handle contains target object or array

    Returns:

    DocumentWriteOperations to write to database

  • serialize

    public String serialize(com.fasterxml.jackson.core.JsonParser containerParser)
    Serialize the target object or array in JsonParser to Strings.

    Parameters:

    containerParser - the JsonParser with target object or array

    Returns:

    Serialized string containing target object or array

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