Class JsonNode

Method Details

• getType

  public abstract JsonNodeType getType()

  Returns the kind of JSON this node represents, which determines the child nodes it accepts.

• writeStartImpl

  protected abstract void writeStartImpl(ExpressionContext context, com.fasterxml.jackson.core.JsonGenerator generator) throws Throwable

  Writes this node's opening output, if any: a start-object or start-array token, a field name or a scalar value.

  Throws:

  Throwable

• writeEndImpl

  protected abstract void writeEndImpl(ExpressionContext context, com.fasterxml.jackson.core.JsonGenerator generator) throws Throwable

  Writes this node's closing output, if any (such as an end-object or end-array token), after its children.

  Throws:

  Throwable

• writeStart

  public final void writeStart(ExpressionContext context, com.fasterxml.jackson.core.JsonGenerator jsonGenerator)

  Writes this node's opening output, wrapping any failure in a DataException that describes the node.

• writeEnd

  public final void writeEnd(ExpressionContext context, com.fasterxml.jackson.core.JsonGenerator jsonGenerator)

  Writes this node's closing output, wrapping any failure in a DataException that describes the node.

• exception

  protected DataException exception(Throwable e)

  Wraps the throwable in a DataException with this node's type, class and children; subclasses add their own details.

• getNodes

  public List<JsonNode> getNodes(ExpressionContext context)

  Returns this node's children; a conditional node returns null when its condition is false in the given context.

• hasNodes

  public boolean hasNodes(ExpressionContext context)

  Returns true if this node has children to write in the given context; a conditional node also requires its condition.

• isMarker

  public boolean isMarker()

  Returns true for the JsonDetailMarker that marks where each record is written.

• add

  protected final <T extends JsonNode> T add(T node)

  Appends the node as a child and returns the added node.

• object

  protected JsonObject object()

  Adds an anonymous object element and returns it; only arrays (and the template root) accept one.

• array

  protected JsonArray array()

  Adds an anonymous array element and returns it; only arrays (and the template root) accept one.

• value

  protected JsonNode value(String valueExpression)

  Adds a scalar element whose value is computed by the given expression; only valid on array nodes.

• object

  protected JsonObject object(String nameExpression)

  Adds an object-valued field and returns the new object; only valid on object nodes.

• array

  protected JsonArray array(String nameExpression)

  Adds an array-valued field and returns the new array; only valid on object nodes.

• field

  protected JsonNode field(String nameExpression, String valueExpression)

  Adds a scalar field whose name and value are computed by the given expressions; only valid on object nodes.

• when

  protected JsonConditionalNode when(String condition)

  Adds and returns a fragment whose nodes are written only when the given logical expression is true.

• detail

  protected JsonDetailMarker detail()

  Adds and returns the detail marker; the nodes added to it are written once for each record.

• assertType

  protected void assertType(JsonNodeType type, String message)

  Throws a DataException with the given message unless this node is of the given type.