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## org.springframework.expression.spel.ast
Class OpMinus

    java.lang.Object
      org.springframework.expression.spel.ast.SpelNodeImpl
          org.springframework.expression.spel.ast.Operator
              org.springframework.expression.spel.ast.OpMinus

All Implemented Interfaces:
  SpelNode

    public class OpMinus

extends Operator

The minus operator supports:

- subtraction of doubles (floats are represented as doubles)
- subtraction of longs
- subtraction of integers
- subtraction of an int from a string of one character (effectively decreasing that character), so 'd'-3='a'

It can be used as a unary operator for numbers (double/long/int). The standard promotions are performed when the operand types vary (double-int=double). For other options it defers to the registered overloader.

Since:
  3.0
Author:
  Andy Clement

Field Summary

Fields inherited from class org.springframework.expression.spel.ast.SpelNodeImpl
`children, pos`

Constructor Summary
`OpMinus(int pos, SpelNodeImpl... operands)`

Method Summary
`SpelNodeImpl` | `getRightOperand()`
`TypedValue` | `getValueInternal(ExpressionState state)`
`String` | `toStringAST()` String format for all operators is the same '(' [operand] [operator] [operand] ')'

Methods inherited from class org.springframework.expression.spel.ast.Operator
`getLeftOperand, getOperatorName`

Methods inherited from class org.springframework.expression.spel.ast.SpelNodeImpl
`getChild, getChildCount, getEndPosition, getObjectClass, getPreviousChild, getStartPosition, getTypedValue, getValue, getValue, isWritable, nextChildIs, setValue`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### OpMinus

    public OpMinus(int pos,
                   SpelNodeImpl... operands)

Method Detail

### getValueInternal

    public TypedValue getValueInternal(ExpressionState state)
                                throws EvaluationException

  Specified by:
    `getValueInternal` in class `SpelNodeImpl`
  Throws:
    `EvaluationException`

### toStringAST

    public String toStringAST()

  Description copied from class: `Operator`
  String format for all operators is the same '(' [operand] [operator] [operand] ')'

  Specified by:
    `toStringAST` in interface `SpelNode`
  Overrides:
    `toStringAST` in class `Operator`
  Returns:
    the string form of this AST node

### getRightOperand

    public SpelNodeImpl getRightOperand()

  Overrides:
    `getRightOperand` in class `Operator`

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