Example usage for java.util OptionalDouble of

Introduction

In this page you can find the example usage for java.util OptionalDouble of.

Prototype

public static OptionalDouble of(double value) 

Source Link

Document

Returns an OptionalDouble describing the given value.

Usage

From source file:com.addthis.bundle.util.AutoField.java

default OptionalDouble getDouble(Bundle bundle) {
    ValueObject valueObject = getValue(bundle);
    if (valueObject == null) {
        return OptionalDouble.empty();
    }/*from  w  w  w  .j  av a2  s .c  om*/
    return OptionalDouble.of(ValueUtil.asNumberOrParse(valueObject).asDouble().asNative());
}

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From source file:ffx.potential.extended.ExtUtils.java

/**
 * Parse system properties of type String, Boolean, Integer, Double, OptionalInt, and OptionalDouble.
 * Default value determines the return type. Provides case-insensitivity in property keys.
 *//*from w w  w.j  a v a 2s.  c o  m*/
@SuppressWarnings("unchecked")
public static final <T> T prop(String key, T defaultVal) throws NoSuchElementException, NumberFormatException {
    if (defaultVal == null) {
        throw new IllegalArgumentException();
    }
    T parsed = null;
    try {
        if (System.getProperty(key) == null) {
            if (System.getProperty(key.toLowerCase()) != null) {
                key = key.toLowerCase();
            } else if (System.getProperty(key.toUpperCase()) != null) {
                key = key.toUpperCase();
            } else {
                boolean found = false;
                for (Object search : System.getProperties().keySet()) {
                    if (search instanceof String && ((String) search).equalsIgnoreCase(key)) {
                        key = (String) search;
                    }
                }
                if (!found) {
                    return defaultVal;
                }
            }
        }
        if (defaultVal instanceof String) {
            parsed = (System.getProperty(key) != null) ? (T) System.getProperty(key) : defaultVal;
        } else if (defaultVal instanceof Integer) {
            return (System.getProperty(key) != null) ? (T) Integer.valueOf(System.getProperty(key))
                    : defaultVal;
        } else if (defaultVal instanceof OptionalInt) {
            parsed = (System.getProperty(key) != null)
                    ? (T) OptionalInt.of(Integer.parseInt(System.getProperty(key)))
                    : defaultVal;
        } else if (defaultVal instanceof Double) {
            parsed = (System.getProperty(key) != null) ? (T) Double.valueOf(System.getProperty(key))
                    : defaultVal;
        } else if (defaultVal instanceof OptionalDouble) {
            parsed = (System.getProperty(key) != null)
                    ? (T) OptionalDouble.of(Double.parseDouble(System.getProperty(key)))
                    : defaultVal;
        } else if (defaultVal instanceof Boolean) {
            if (System.getProperty(key) != null) {
                if (System.getProperty(key).isEmpty()) {
                    System.setProperty(key, "true");
                }
                parsed = (T) Boolean.valueOf(System.getProperty(key));
            }
        } else {
            throw new IllegalArgumentException();
        }
    } catch (IllegalArgumentException ex) {
        String value = (System.getProperty(key) != null) ? System.getProperty(key) : "null";
        logger.warning(String.format("Error parsing property %s with value %s; the default is %s.", key, value,
                defaultVal.toString()));
        throw ex;
    }
    config.addProperty(key, parsed);
    return parsed;
}

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From source file:org.apache.lens.cube.parse.SegmentationCandidate.java

@Override
public OptionalDouble getCost() {
    if (areCandidatesPicked()) {
        double cost = 0.0;
        for (Candidate candidate : getChildren()) {
            if (candidate.getCost().isPresent()) {
                cost += candidate.getCost().getAsDouble();
            } else {
                return OptionalDouble.empty();
            }/*from ww  w .ja v  a  2s  .  c  o  m*/
        }
        return OptionalDouble.of(cost);
    } else {
        return OptionalDouble.empty();
    }
}

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From source file:org.apache.lens.cube.parse.StorageCandidate.java

@Override
public OptionalDouble getCost() {
    return OptionalDouble.of(fact.weight());
}

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