Package com.saxonica.ee.optim

## Class GlobalExtractor

- java.lang.Object
- - com.saxonica.ee.optim.GlobalExtractor

-     public class GlobalExtractor
      extends java.lang.Object

  This class is responsible for extracting global variables from subexpressions within a function or template

- - ### Field Summary

    Fields
    Modifier and Type | Field | Description
    --- | --- | ---
    `static int` | `COST_THRESHOLD` |

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `GlobalExtractor​(Expression root, GlobalVariableManager globalVariableManager, ExpressionVisitor visitor)` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `Expression` | `extractGlobals()` |

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

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

- - ### Field Detail

    - #### COST_THRESHOLD

          public static final int COST_THRESHOLD

      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### GlobalExtractor

          public GlobalExtractor​(Expression root,
                                 GlobalVariableManager globalVariableManager,
                                 ExpressionVisitor visitor)

  - ### Method Detail

    - #### extractGlobals

          public Expression extractGlobals()
                                    throws XPathException

      Throws:
        `XPathException`