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com.vaadin.signals.
Package com.vaadin.signals

Record Class SignalCommand.PutIfAbsentCommand

java.lang.Object
java.lang.Record
com.vaadin.signals.SignalCommand.PutIfAbsentCommand

Record Components:

commandId - the unique command id used to track the status of this command instance, not null. Also used as the node id of the newly created node.

targetNodeId - id of the parent node to update, not null

key - the key to update, not null

value - the value to set if a mapping didn't already exist

All Implemented Interfaces:

SignalCommand, SignalCommand.KeyCommand, SignalCommand.ScopeOwnerCommand, SignalCommand.ValueCommand

Enclosing interface:

SignalCommand

public static record SignalCommand.PutIfAbsentCommand(Id commandId, Id targetNodeId, Id scopeOwner, String key, com.fasterxml.jackson.databind.JsonNode value) extends Record implements SignalCommand.ValueCommand, SignalCommand.KeyCommand, SignalCommand.ScopeOwnerCommand

Stores the given value in a child node with the given key if it doesn't already exist. If the key exists, then the value is not updated but a new alias is created to reference the existing entry. If the key doesn't exist, then a new node is created to hold the value.

  • Constructor Details

    • PutIfAbsentCommand

      public PutIfAbsentCommand(Id commandId, Id targetNodeId, Id scopeOwner, String key, com.fasterxml.jackson.databind.JsonNode value)

      Creates an instance of a PutIfAbsentCommand record class.

      Parameters:

      commandId - the value for the commandId record component

      targetNodeId - the value for the targetNodeId record component

      scopeOwner - the value for the scopeOwner record component

      key - the value for the key record component

      value - the value for the value record component

  • Method Details

    • toString

      public final String toString()

      Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.

      Specified by:

      toString in class Record

      Returns:

      a string representation of this object

    • hashCode

      public final int hashCode()

      Returns a hash code value for this object. The value is derived from the hash code of each of the record components.

      Specified by:

      hashCode in class Record

      Returns:

      a hash code value for this object

    • equals

      public final boolean equals(Object o)

      Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).

      Specified by:

      equals in class Record

      Parameters:

      o - the object with which to compare

      Returns:

      true if this object is the same as the o argument; false otherwise.

    • commandId

      public Id commandId()

      Returns the value of the commandId record component.

      Specified by:

      commandId in interface SignalCommand

      Returns:

      the value of the commandId record component

    • targetNodeId

      public Id targetNodeId()

      Returns the value of the targetNodeId record component.

      Specified by:

      targetNodeId in interface SignalCommand

      Returns:

      the value of the targetNodeId record component

    • scopeOwner

      public Id scopeOwner()

      Returns the value of the scopeOwner record component.

      Specified by:

      scopeOwner in interface SignalCommand.ScopeOwnerCommand

      Returns:

      the value of the scopeOwner record component

    • key

      public String key()

      Returns the value of the key record component.

      Specified by:

      key in interface SignalCommand.KeyCommand

      Returns:

      the value of the key record component

    • value

      public com.fasterxml.jackson.databind.JsonNode value()

      Returns the value of the value record component.

      Specified by:

      value in interface SignalCommand.ValueCommand

      Returns:

      the value of the value record component

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