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## org.modeshape.graph.query.plan
Enum PlanNode.Type

    java.lang.Object
      java.lang.Enum<PlanNode.Type>
          org.modeshape.graph.query.plan.PlanNode.Type

All Implemented Interfaces:
  Serializable, Comparable<PlanNode.Type>

Enclosing class:
  PlanNode

    public static enum PlanNode.Type

extends Enum<PlanNode.Type>

An enumeration dictating the type of plan tree nodes.

Enum Constant Summary
`ACCESS` A node that represents an access of the underlying storage.
`DEPENDENT_QUERY` A node that contains two nodes, where the left side must be done before the right
`DUP_REMOVE` A node that defines the removal of duplicate tuples.
`GROUP` A node that groups sets of rows into groups (and where aggregation would be performed)
`JOIN` A node that defines the join type, join criteria, and join strategy
`LIMIT` A node that limits the number of tuples returned
`NULL` A node that produces no results
`PROJECT` A node that defines the columns returned from the node.
`SELECT` A node that selects a filters the tuples by applying a criteria evaluation filter node (WHERE / HAVING)
`SET_OPERATION` A node the performs set operations on two sets of tuples, including UNION
`SORT` A node that defines the columns to sort on, the sort direction for each column, and whether to remove duplicates.
`SOURCE` A node that defines the 'table' from which the tuples are being obtained

Method Summary
`static PlanNode.Type` | `forSymbol(String symbol)` Attempt to find the Type given a symbol.
`String` | `getSymbol()` Get the symbol representation of this node type.
`String` | `toString()`
`static PlanNode.Type` | `valueOf(String name)` Returns the enum constant of this type with the specified name.
`static PlanNode.Type[]` | `values()` Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
`clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, valueOf`

Methods inherited from class java.lang.Object
`getClass, notify, notifyAll, wait, wait, wait`

Enum Constant Detail

### ACCESS

    public static final PlanNode.Type ACCESS

  A node that represents an access of the underlying storage.

### DUP_REMOVE

    public static final PlanNode.Type DUP_REMOVE

  A node that defines the removal of duplicate tuples.

### JOIN

    public static final PlanNode.Type JOIN

  A node that defines the join type, join criteria, and join strategy

### PROJECT

    public static final PlanNode.Type PROJECT

  A node that defines the columns returned from the node.

### SELECT

    public static final PlanNode.Type SELECT

  A node that selects a filters the tuples by applying a criteria evaluation filter node (WHERE / HAVING)

### SORT

    public static final PlanNode.Type SORT

  A node that defines the columns to sort on, the sort direction for each column, and whether to remove duplicates.

### SOURCE

    public static final PlanNode.Type SOURCE

  A node that defines the 'table' from which the tuples are being obtained

### GROUP

    public static final PlanNode.Type GROUP

  A node that groups sets of rows into groups (and where aggregation would be performed)

### NULL

    public static final PlanNode.Type NULL

  A node that produces no results

### LIMIT

    public static final PlanNode.Type LIMIT

  A node that limits the number of tuples returned

### SET_OPERATION

    public static final PlanNode.Type SET_OPERATION

  A node the performs set operations on two sets of tuples, including UNION

### DEPENDENT_QUERY

    public static final PlanNode.Type DEPENDENT_QUERY

  A node that contains two nodes, where the left side must be done before the right

Method Detail

### values

    public static PlanNode.Type[] values()

  Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

      for (PlanNode.Type c : PlanNode.Type.values())
          System.out.println(c);

  Returns:
    an array containing the constants of this enum type, in the order they are declared

### valueOf

    public static PlanNode.Type valueOf(String name)

  Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

  Parameters:
    `name` - the name of the enum constant to be returned.
  Returns:
    the enum constant with the specified name
  Throws:
    `IllegalArgumentException` - if this enum type has no constant with the specified name
    `NullPointerException` - if the argument is null

### getSymbol

    public String getSymbol()

  Get the symbol representation of this node type.

  Returns:
    the symbol; never null and never empty

### toString

    public String toString()

  Overrides:
    `toString` in class `Enum<PlanNode.Type>`
  See Also:
    `Enum.toString()`

### forSymbol

    public static PlanNode.Type forSymbol(String symbol)

  Attempt to find the Type given a symbol. The matching is done independent of case.

  Parameters:
    `symbol` - the symbol
  Returns:
    the Type having the supplied symbol, or null if there is no Type with the supplied symbol
  Throws:
    `IllegalArgumentException` - if the symbol is null

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