Using Regular Expressions with Oracle BPEL

Using Regular Expressions with Oracle BPEL:

Sometimes we may have to validate the data based on the Regular Expressions.

xp20:matches() is a function which can be used to compare data with regular expressions. This function returns true when the input matches the given expression.

xp20:matches(intputString, regexPattern)

• inputString - The input string
• regexPattern - The regular expression pattern

Validation of numeric fields :

xp20:matches(bpws:getVariableData('inputString'),'^[0-9]*$')=true()

Validation of alpha fields :

xp20:matches(bpws:getVariableData('inputString'),'^[A-Za-z]*$')=true()

Validation for list of values:

xp20:matches(bpws:getVariableData('inputString'),'^(A|B|C|D)$') =true()

The matches function returns true if inputString variable contains any one of these values (A, B, C, and D).

The expression can be replaced with other regular expressions for similar comparisons.