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java.lang.Objectorg.apache.commons.jexl2.JexlArithmetic
public class JexlArithmetic
Perform arithmetic.
All arithmetic operators (+, - , *, /, %) follow the same rules regarding their arguments.
Field Summary | |
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protected static java.math.BigDecimal |
BIGD_DOUBLE_MAX_VALUE
Double.MAX_VALUE as BigDecimal. |
protected static java.math.BigDecimal |
BIGD_DOUBLE_MIN_VALUE
Double.MIN_VALUE as BigDecimal. |
protected static int |
BIGD_SCALE
Default BigDecimal scale. |
protected static java.math.BigInteger |
BIGI_LONG_MAX_VALUE
Long.MAX_VALUE as BigInteger. |
protected static java.math.BigInteger |
BIGI_LONG_MIN_VALUE
Long.MIN_VALUE as BigInteger. |
protected java.math.MathContext |
mathContext
The big decimal math context. |
protected int |
mathScale
The big decimal scale. |
Constructor Summary | |
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JexlArithmetic(boolean lenient)
Creates a JexlArithmetic. |
|
JexlArithmetic(boolean lenient,
java.math.MathContext bigdContext,
int bigdScale)
Creates a JexlArithmetic. |
Method Summary | |
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java.lang.Object |
add(java.lang.Object left,
java.lang.Object right)
Add two values together. |
java.lang.Object |
bitwiseAnd(java.lang.Object left,
java.lang.Object right)
Performs a bitwise and. |
java.lang.Object |
bitwiseComplement(java.lang.Object val)
Performs a bitwise complement. |
java.lang.Object |
bitwiseOr(java.lang.Object left,
java.lang.Object right)
Performs a bitwise or. |
java.lang.Object |
bitwiseXor(java.lang.Object left,
java.lang.Object right)
Performs a bitwise xor. |
protected int |
compare(java.lang.Object left,
java.lang.Object right,
java.lang.String operator)
Performs a comparison. |
protected java.lang.Object |
controlNullNullOperands()
The result of +,/,-,*,% when both operands are null. |
protected void |
controlNullOperand()
Throw a NPE if arithmetic is strict. |
java.lang.Object |
divide(java.lang.Object left,
java.lang.Object right)
Divide the left value by the right. |
boolean |
equals(java.lang.Object left,
java.lang.Object right)
Test if left and right are equal. |
java.math.MathContext |
getMathContext()
The MathContext instance used for +,-,/,*,% operations on big decimals. |
int |
getMathScale()
The BigDecimal scale used for comparison and coercion operations. |
boolean |
greaterThan(java.lang.Object left,
java.lang.Object right)
Test if left > right. |
boolean |
greaterThanOrEqual(java.lang.Object left,
java.lang.Object right)
Test if left >= right. |
protected boolean |
isFloatingPoint(java.lang.Object o)
Is Object a floating point number. |
protected boolean |
isFloatingPointNumber(java.lang.Object val)
Test if the passed value is a floating point number, i.e. |
protected boolean |
isFloatingPointType(java.lang.Object left,
java.lang.Object right)
Test if either left or right are either a Float or Double. |
boolean |
isLenient()
Checks whether this JexlArithmetic instance triggers errors during evaluation when null is used as an operand. |
protected boolean |
isNumberable(java.lang.Object o)
Is Object a whole number. |
boolean |
lessThan(java.lang.Object left,
java.lang.Object right)
Test if left < right. |
boolean |
lessThanOrEqual(java.lang.Object left,
java.lang.Object right)
Test if left <= right. |
boolean |
matches(java.lang.Object left,
java.lang.Object right)
Test if left regexp matches right. |
java.lang.Object |
mod(java.lang.Object left,
java.lang.Object right)
left value mod right. |
java.lang.Object |
multiply(java.lang.Object left,
java.lang.Object right)
Multiply the left value by the right. |
java.lang.Number |
narrow(java.lang.Number original)
Given a Number, return back the value using the smallest type the result will fit into. |
protected boolean |
narrowAccept(java.lang.Class<?> narrow,
java.lang.Class<?> source)
Whether we consider the narrow class as a potential candidate for narrowing the source. |
protected boolean |
narrowArguments(java.lang.Object[] args)
Replace all numbers in an arguments array with the smallest type that will fit. |
protected java.lang.Object |
narrowArrayType(java.lang.Object[] untyped)
Given an array of objects, attempt to type it more strictly. |
protected java.lang.Number |
narrowBigDecimal(java.lang.Object lhs,
java.lang.Object rhs,
java.math.BigDecimal bigd)
Given a BigDecimal, attempt to narrow it to an Integer or Long if it fits if one of the arguments is a numberable. |
protected java.lang.Number |
narrowBigInteger(java.lang.Object lhs,
java.lang.Object rhs,
java.math.BigInteger bigi)
Given a BigInteger, narrow it to an Integer or Long if it fits and the arguments class allow it. |
protected java.lang.Number |
narrowNumber(java.lang.Number original,
java.lang.Class<?> narrow)
Given a Number, return back the value attempting to narrow it to a target class. |
java.lang.Object |
negate(java.lang.Object val)
Negates a value (unary minus for numbers). |
java.math.BigDecimal |
roundBigDecimal(java.math.BigDecimal number)
Ensure a big decimal is rounded by this arithmetic scale and rounding mode. |
java.lang.Object |
subtract(java.lang.Object left,
java.lang.Object right)
Subtract the right value from the left. |
java.math.BigDecimal |
toBigDecimal(java.lang.Object val)
Get a BigDecimal from the object passed. |
java.math.BigInteger |
toBigInteger(java.lang.Object val)
Get a BigInteger from the object passed. |
boolean |
toBoolean(java.lang.Object val)
Coerce to a boolean (not a java.lang.Boolean). |
double |
toDouble(java.lang.Object val)
Coerce to a double. |
int |
toInteger(java.lang.Object val)
Coerce to a int. |
long |
toLong(java.lang.Object val)
Coerce to a long (not a java.lang.Long). |
java.lang.String |
toString(java.lang.Object val)
Coerce to a string. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected static final java.math.BigDecimal BIGD_DOUBLE_MAX_VALUE
protected static final java.math.BigDecimal BIGD_DOUBLE_MIN_VALUE
protected static final java.math.BigInteger BIGI_LONG_MAX_VALUE
protected static final java.math.BigInteger BIGI_LONG_MIN_VALUE
protected static final int BIGD_SCALE
protected final java.math.MathContext mathContext
protected final int mathScale
Constructor Detail |
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public JexlArithmetic(boolean lenient)
lenient
- whether this arithmetic is lenient or strictpublic JexlArithmetic(boolean lenient, java.math.MathContext bigdContext, int bigdScale)
lenient
- whether this arithmetic is lenient or strictbigdContext
- the math context instance to use for +,-,/,*,% operations on big decimals.bigdScale
- the scale used for big decimals.Method Detail |
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public boolean isLenient()
public java.math.MathContext getMathContext()
public int getMathScale()
public java.math.BigDecimal roundBigDecimal(java.math.BigDecimal number)
number
- the big decimal to round
protected java.lang.Object controlNullNullOperands()
java.lang.ArithmeticException
- if strictprotected void controlNullOperand()
java.lang.ArithmeticException
- if strictprotected boolean isFloatingPointType(java.lang.Object left, java.lang.Object right)
left
- one object to testright
- the other
protected boolean isFloatingPointNumber(java.lang.Object val)
val
- the object to be tested
protected boolean isFloatingPoint(java.lang.Object o)
o
- Object to be analyzed.
protected boolean isNumberable(java.lang.Object o)
o
- Object to be analyzed.
protected java.lang.Number narrowBigInteger(java.lang.Object lhs, java.lang.Object rhs, java.math.BigInteger bigi)
The rules are: if either arguments is a BigInteger, no narrowing will occur if either arguments is a Long, no narrowing to Integer will occur
lhs
- the left hand side operand that lead to the bigi resultrhs
- the right hand side operand that lead to the bigi resultbigi
- the BigInteger to narrow
protected java.lang.Number narrowBigDecimal(java.lang.Object lhs, java.lang.Object rhs, java.math.BigDecimal bigd)
lhs
- the left hand side operand that lead to the bigd resultrhs
- the right hand side operand that lead to the bigd resultbigd
- the BigDecimal to narrow
protected java.lang.Object narrowArrayType(java.lang.Object[] untyped)
untyped
- an untyped array
protected boolean narrowArguments(java.lang.Object[] args)
args
- the argument array
public java.lang.Object add(java.lang.Object left, java.lang.Object right)
If any numeric add fails on coercion to the appropriate type, treat as Strings and do concatenation.
left
- first valueright
- second value
public java.lang.Object divide(java.lang.Object left, java.lang.Object right)
left
- first valueright
- second value
java.lang.ArithmeticException
- if right == 0public java.lang.Object mod(java.lang.Object left, java.lang.Object right)
left
- first valueright
- second value
java.lang.ArithmeticException
- if right == 0.0public java.lang.Object multiply(java.lang.Object left, java.lang.Object right)
left
- first valueright
- second value
public java.lang.Object subtract(java.lang.Object left, java.lang.Object right)
left
- first valueright
- second value
public java.lang.Object negate(java.lang.Object val)
val
- the value to negate
public boolean matches(java.lang.Object left, java.lang.Object right)
left
- first valueright
- second value
public java.lang.Object bitwiseAnd(java.lang.Object left, java.lang.Object right)
left
- the left operandright
- the right operator
public java.lang.Object bitwiseOr(java.lang.Object left, java.lang.Object right)
left
- the left operandright
- the right operator
public java.lang.Object bitwiseXor(java.lang.Object left, java.lang.Object right)
left
- the left operandright
- the right operator
public java.lang.Object bitwiseComplement(java.lang.Object val)
val
- the operand
protected int compare(java.lang.Object left, java.lang.Object right, java.lang.String operator)
left
- the left operandright
- the right operatoroperator
- the operator
java.lang.ArithmeticException
- if either left or right is nullpublic boolean equals(java.lang.Object left, java.lang.Object right)
left
- first valueright
- second value
public boolean lessThan(java.lang.Object left, java.lang.Object right)
left
- first valueright
- second value
public boolean greaterThan(java.lang.Object left, java.lang.Object right)
left
- first valueright
- second value
public boolean lessThanOrEqual(java.lang.Object left, java.lang.Object right)
left
- first valueright
- second value
public boolean greaterThanOrEqual(java.lang.Object left, java.lang.Object right)
left
- first valueright
- second value
public boolean toBoolean(java.lang.Object val)
val
- Object to be coerced.
public int toInteger(java.lang.Object val)
val
- Object to be coerced.
public long toLong(java.lang.Object val)
val
- Object to be coerced.
public java.math.BigInteger toBigInteger(java.lang.Object val)
val
- the object to be coerced.
java.lang.NullPointerException
- if val is null and mode is strict.public java.math.BigDecimal toBigDecimal(java.lang.Object val)
val
- the object to be coerced.
java.lang.NullPointerException
- if val is null and mode is strict.public double toDouble(java.lang.Object val)
val
- Object to be coerced.
java.lang.NullPointerException
- if val is null and mode is strict.public java.lang.String toString(java.lang.Object val)
val
- Object to be coerced.
java.lang.NullPointerException
- if val is null and mode is strict.public java.lang.Number narrow(java.lang.Number original)
original
- the original number.
protected boolean narrowAccept(java.lang.Class<?> narrow, java.lang.Class<?> source)
narrow
- the target narrow classsource
- the orginal source class
protected java.lang.Number narrowNumber(java.lang.Number original, java.lang.Class<?> narrow)
original
- the original numbernarrow
- the attempted target class
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