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java.lang.Objectde.congrace.exp4j.ExpressionBuilder
public class ExpressionBuilder
This is Builder implementation for the exp4j API used to create a Calculable instance for the user
Field Summary | |
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static String |
PROPERTY_UNARY_HIGH_PRECEDENCE
Property name for unary precedence choice. |
Constructor Summary | |
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ExpressionBuilder(String expression)
Create a new ExpressionBuilder |
Method Summary | |
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Calculable |
build()
build a new Calculable from the expression using the supplied
variables |
ExpressionBuilder |
withCustomFunction(CustomFunction function)
add a custom function instance for the evaluator to recognize |
ExpressionBuilder |
withCustomFunctions(Collection<CustomFunction> functions)
|
ExpressionBuilder |
withExpression(String expression)
set the mathematical expression for parsing |
ExpressionBuilder |
withOperation(CustomOperator operation)
set a CustomOperator to be used in the expression |
ExpressionBuilder |
withOperations(Collection<CustomOperator> operations)
set a Collection of CustomOperator to use in the
expression |
ExpressionBuilder |
withVariable(String variableName,
double value)
set the value for a variable |
ExpressionBuilder |
withVariableNames(String... variableNames)
set the variables names used in the expression without setting their values |
ExpressionBuilder |
withVariables(Map<String,Double> variableMap)
set the values for variables |
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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public static final String PROPERTY_UNARY_HIGH_PRECEDENCE
Constructor Detail |
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public ExpressionBuilder(String expression)
expression
- the expression to evaluateMethod Detail |
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public Calculable build() throws UnknownFunctionException, UnparsableExpressionException
Calculable
from the expression using the supplied
variables
Calculable
which can be used to evaluate the
expression
UnknownFunctionException
- when an unrecognized function name is used in the expression
UnparsableExpressionException
- if the expression could not be parsedpublic ExpressionBuilder withCustomFunction(CustomFunction function)
function
- the CustomFunction
to add
ExpressionBuilder
instancepublic ExpressionBuilder withCustomFunctions(Collection<CustomFunction> functions)
public ExpressionBuilder withVariable(String variableName, double value)
variableName
- the variable name e.g. "x"value
- the value e.g. 2.32d
ExpressionBuilder
instancepublic ExpressionBuilder withVariableNames(String... variableNames)
variableNames
- vararg String
of the variable names used in the
expression
public ExpressionBuilder withVariables(Map<String,Double> variableMap)
variableMap
- a map of variable names to variable values
ExpressionBuilder
instancepublic ExpressionBuilder withOperation(CustomOperator operation)
CustomOperator
to be used in the expression
operation
- the CustomOperator
to be used
ExpressionBuilder
instancepublic ExpressionBuilder withOperations(Collection<CustomOperator> operations)
Collection
of CustomOperator
to use in the
expression
operations
- the Collection
of CustomOperator
to use
ExpressionBuilder
instancepublic ExpressionBuilder withExpression(String expression)
expression
- a mathematical expression
ExpressionBuilder
instance
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