Examples with Collectors.toSet java.util.stream.Collectors.toSet used on opensource projects

Example 1 with Collectors.toSet

use of java.util.stream.Collectors.toSet in project ddf by codice.

the class ValidationParser method getMetacardValidators.

@SuppressWarnings("unchecked")
private List<MetacardValidator> getMetacardValidators(MetacardValidatorDefinition validatorDefinition) {
    List<MetacardValidator> metacardValidators = new ArrayList<>();
    MetacardValidator metacardValidator = null;
    String validatorName = null;
    Object metacardValidatorObj = validatorDefinition.arguments.get(VALIDATOR_PROPERTY);
    if (metacardValidatorObj instanceof String) {
        validatorName = (String) metacardValidatorObj;
    }
    if (validatorName != null) {
        String metacardType = validatorDefinition.metacardType;
        switch(validatorName) {
            case REQUIRED_ATTRIBUTE_VALIDATOR_PROPERTY:
                {
                    if (metacardType == null) {
                        throw new IllegalStateException("Required Attributes Validator received invalid configuration");
                    }
                    Set<String> requiredAttributes = new HashSet<>();
                    Object requiredAttributesObj = validatorDefinition.arguments.get(REQUIRED_ATTRIBUTES_PROPERTY);
                    if (requiredAttributesObj instanceof List) {
                        List<Object> requiredAttrObjList = (List) requiredAttributesObj;
                        requiredAttributes = requiredAttrObjList.stream().filter(String.class::isInstance).map(String.class::cast).collect(Collectors.toSet());
                    }
                    if (CollectionUtils.isNotEmpty(requiredAttributes)) {
                        metacardValidator = new RequiredAttributesMetacardValidator(metacardType, requiredAttributes);
                    } else {
                        throw new IllegalStateException("Required Attributes Validator received invalid configuration");
                    }
                    break;
                }
            default:
                throw new IllegalStateException("Validator does not exist. (" + validatorName + ")");
        }
    }
    if (metacardValidator != null) {
        metacardValidators.add(metacardValidator);
    }
    return metacardValidators;
}