org.opencds.cqf.cql.engine.model.BaseModelResolver Maven / Gradle / Ivy

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package org.opencds.cqf.cql.engine.model;

import org.opencds.cqf.cql.engine.exception.InvalidCast;

public abstract class BaseModelResolver implements ModelResolver {
    public Boolean is(Object value, Class type) {
        if (value == null) {
            return null;
        }

        if (type.isAssignableFrom(value.getClass())) {
            return true;
        }

        return false;
    }

    public Object as(Object value, Class type, boolean isStrict) {
        if (value == null) {
            return null;
        }

        if (type.isAssignableFrom(value.getClass())) {
            return value;
        }

        if (isStrict) {
            throw new InvalidCast(String.format("Cannot cast a value of type %s as %s.", value.getClass().getName(), type.getName()));
        }

        return null;
    }
}