org.eclipse.rdf4j.query.algebra

## Class MathExpr

- java.lang.Object
- - org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode
  - - org.eclipse.rdf4j.query.algebra.BinaryValueOperator
    - - org.eclipse.rdf4j.query.algebra.MathExpr

- All Implemented Interfaces:
    Serializable, Cloneable, GraphPatternGroupable, QueryModelNode, ValueExpr, VariableScopeChange

      public class MathExpr
      extends BinaryValueOperator

  A mathematical expression consisting an operator and two arguments.
  See Also:
    Serialized Form

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class and Description
    --- | ---
    `static class` | `MathExpr.MathOp`

  - ### Field Summary

    - ### Fields inherited from class org.eclipse.rdf4j.query.algebra.BinaryValueOperator

      `leftArg, rightArg`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `MathExpr()`
    `MathExpr(ValueExpr leftArg, ValueExpr rightArg, MathExpr.MathOp operator)`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `MathExpr` | `clone()` Returns a (deep) clone of this query model node.
    `boolean` | `equals(Object other)` Returns `true` if this query model node and its children are recursively equal to `o` and its children.
    `MathExpr.MathOp` | `getOperator()`
    `String` | `getSignature()` Default implementation of `QueryModelNode.getSignature()` that prints the name of the node's class.
    `int` | `hashCode()`
    `void` | `setOperator(MathExpr.MathOp operator)`
    `<X extends Exception> void` | `visit(QueryModelVisitor<X> visitor)` Visits this node.

    - ### Methods inherited from class org.eclipse.rdf4j.query.algebra.BinaryValueOperator

      `getLeftArg, getRightArg, replaceChildNode, setLeftArg, setRightArg, visitChildren`

    - ### Methods inherited from class org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode

      `getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getTotalTimeNanosActual, isGraphPatternGroup, isVariableScopeChange, nullEquals, replaceNodeInList, replaceWith, setCostEstimate, setGraphPatternGroup, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, setVariableScopeChange, toString`

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

      `finalize, getClass, notify, notifyAll, wait, wait, wait`

    - ### Methods inherited from interface org.eclipse.rdf4j.query.algebra.QueryModelNode

      `getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getTotalTimeNanosActual, replaceWith, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, toString`

- - ### Constructor Detail

    - #### MathExpr

          public MathExpr()

    - #### MathExpr

          public MathExpr(ValueExpr leftArg,
                          ValueExpr rightArg,
                          MathExpr.MathOp operator)

  - ### Method Detail

    - #### getOperator

          public MathExpr.MathOp getOperator()

    - #### setOperator

          public void setOperator(MathExpr.MathOp operator)

    - #### visit

          public <X extends Exception> void visit(QueryModelVisitor<X> visitor)
                                           throws X extends Exception

      Description copied from interface: `QueryModelNode`
      Visits this node. The node reports itself to the visitor with the proper runtime type.
      Throws:
        `X extends Exception`

    - #### getSignature

          public String getSignature()

      Description copied from class: `AbstractQueryModelNode`
      Default implementation of `QueryModelNode.getSignature()` that prints the name of the node's class.
      Specified by:
        `getSignature` in interface `QueryModelNode`
      Overrides:
        `getSignature` in class `AbstractQueryModelNode`
      Returns:
        The node's signature, e.g. `SLICE (offset=10, limit=10)`.

    - #### equals

          public boolean equals(Object other)

      Description copied from interface: `QueryModelNode`
      Returns `true` if this query model node and its children are recursively equal to `o` and its children.
      Specified by:
        `equals` in interface `QueryModelNode`
      Overrides:
        `equals` in class `BinaryValueOperator`

    - #### hashCode

          public int hashCode()

      Overrides:
        `hashCode` in class `BinaryValueOperator`

    - #### clone

          public MathExpr clone()

      Description copied from interface: `QueryModelNode`
      Returns a (deep) clone of this query model node. This method recursively clones the entire node tree, starting from this nodes.
      Specified by:
        `clone` in interface `QueryModelNode`
      Specified by:
        `clone` in interface `ValueExpr`
      Overrides:
        `clone` in class `BinaryValueOperator`
      Returns:
        A deep clone of this query model node.

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