Example usage for org.apache.commons.configuration2.ex ConversionException ConversionException

Introduction

In this page you can find the example usage for org.apache.commons.configuration2.ex ConversionException ConversionException.

Prototype

public ConversionException(final Throwable cause) 

Source Link

Document

Constructs a new ConversionException with specified nested Throwable .

Usage

From source file:net.yck.wkrdb.common.shared.PropertyConverter.java

/**
 * Performs a data type conversion from the specified value object to the
 * given target data class. If additional information is required for this
 * conversion, it is obtained from {@code DefaultConversionHandler.INSTANCE}
 * object. If the class is a primitive type (Integer.TYPE, Boolean.TYPE,
 * etc), the value returned will use the wrapper type (Integer.class,
 * Boolean.class, etc).//from   w ww .ja  va 2 s.com
 *
 * @param cls
 *            the target class of the converted value
 * @param value
 *            the value to convert
 * @return the converted value
 * @throws ConversionException
 *             if the value is not compatible with the requested type
 */
public static Object to(Class<?> cls, Object value) throws ConversionException {
    if (cls.isInstance(value)) {
        return value; // no conversion needed
    }

    if (String.class.equals(cls)) {
        return String.valueOf(value);
    }
    if (Boolean.class.equals(cls) || Boolean.TYPE.equals(cls)) {
        return toBoolean(value);
    } else if (Character.class.equals(cls) || Character.TYPE.equals(cls)) {
        return toCharacter(value);
    } else if (Number.class.isAssignableFrom(cls) || cls.isPrimitive()) {
        if (Integer.class.equals(cls) || Integer.TYPE.equals(cls)) {
            return toInteger(value);
        } else if (Long.class.equals(cls) || Long.TYPE.equals(cls)) {
            return toLong(value);
        } else if (Byte.class.equals(cls) || Byte.TYPE.equals(cls)) {
            return toByte(value);
        } else if (Short.class.equals(cls) || Short.TYPE.equals(cls)) {
            return toShort(value);
        } else if (Float.class.equals(cls) || Float.TYPE.equals(cls)) {
            return toFloat(value);
        } else if (Double.class.equals(cls) || Double.TYPE.equals(cls)) {
            return toDouble(value);
        } else if (BigInteger.class.equals(cls)) {
            return toBigInteger(value);
        } else if (BigDecimal.class.equals(cls)) {
            return toBigDecimal(value);
        }
    } else if (Date.class.equals(cls)) {
        return toDate(value, DefaultConversionHandler.INSTANCE.getDateFormat());
    } else if (Calendar.class.equals(cls)) {
        return toCalendar(value, DefaultConversionHandler.INSTANCE.getDateFormat());
    } else if (URL.class.equals(cls)) {
        return toURL(value);
    } else if (Locale.class.equals(cls)) {
        return toLocale(value);
    } else if (isEnum(cls)) {
        return convertToEnum(cls, value);
    } else if (Color.class.equals(cls)) {
        return toColor(value);
    } else if (cls.getName().equals(INTERNET_ADDRESS_CLASSNAME)) {
        return toInternetAddress(value);
    } else if (InetAddress.class.isAssignableFrom(cls)) {
        return toInetAddress(value);
    }

    throw new ConversionException("The value '" + value + "' (" + value.getClass() + ")"
            + " can't be converted to a " + cls.getName() + " object");
}

---

From source file:net.yck.wkrdb.common.shared.PropertyConverter.java

/**
 * Convert the specified object into a Boolean. Internally the
 * {@code org.apache.commons.lang.BooleanUtils} class from the
 * <a href="http://commons.apache.org/lang/">Commons Lang</a> project is
 * used to perform this conversion. This class accepts some more tokens for
 * the boolean value of <b>true</b>, e.g. {@code yes} and {@code on}. Please
 * refer to the documentation of this class for more details.
 *
 * @param value//from  w  ww. j  a va2  s . c om
 *            the value to convert
 * @return the converted value
 * @throws ConversionException
 *             thrown if the value cannot be converted to a boolean
 */
public static Boolean toBoolean(Object value) throws ConversionException {
    if (value instanceof Boolean) {
        return (Boolean) value;
    } else if (value instanceof String) {
        Boolean b = BooleanUtils.toBooleanObject((String) value);
        if (b == null) {
            throw new ConversionException("The value " + value + " can't be converted to a Boolean object");
        }
        return b;
    } else {
        throw new ConversionException("The value " + value + " can't be converted to a Boolean object");
    }
}

---

From source file:net.yck.wkrdb.common.shared.PropertyConverter.java

/**
 * Converts the specified value object to a {@code Character}. This method
 * converts the passed in object to a string. If the string has exactly one
 * character, this character is returned as result. Otherwise, conversion
 * fails./*from w ww . ja va2s .  co m*/
 *
 * @param value
 *            the value to be converted
 * @return the resulting {@code Character} object
 * @throws ConversionException
 *             if the conversion is not possible
 */
public static Character toCharacter(Object value) throws ConversionException {
    String strValue = String.valueOf(value);
    if (strValue.length() == 1) {
        return Character.valueOf(strValue.charAt(0));
    } else {
        throw new ConversionException(
                String.format("The value '%s' cannot be converted to a Character object!", strValue));
    }
}

---

From source file:net.yck.wkrdb.common.shared.PropertyConverter.java

/**
 * Convert the specified object into a Locale.
 *
 * @param value// ww w. ja v a  2  s.co m
 *            the value to convert
 * @return the converted value
 * @throws ConversionException
 *             thrown if the value cannot be converted to a Locale
 */
public static Locale toLocale(Object value) throws ConversionException {
    if (value instanceof Locale) {
        return (Locale) value;
    } else if (value instanceof String) {
        String[] elements = ((String) value).split("_");
        int size = elements.length;

        if (size >= 1 && ((elements[0]).length() == 2 || (elements[0]).length() == 0)) {
            String language = elements[0];
            String country = (size >= 2) ? elements[1] : "";
            String variant = (size >= 3) ? elements[2] : "";

            return new Locale(language, country, variant);
        } else {
            throw new ConversionException("The value " + value + " can't be converted to a Locale");
        }
    } else {
        throw new ConversionException("The value " + value + " can't be converted to a Locale");
    }
}

---

From source file:net.yck.wkrdb.common.shared.PropertyConverter.java

/**
 * Convert the specified object into a Color. If the value is a String, the
 * format allowed is (#)?[0-9A-F]{6}([0-9A-F]{2})?. Examples:
 * <ul>/*ww w .  ja  v a2 s.c  om*/
 * <li>FF0000 (red)</li>
 * <li>0000FFA0 (semi transparent blue)</li>
 * <li>#CCCCCC (gray)</li>
 * <li>#00FF00A0 (semi transparent green)</li>
 * </ul>
 *
 * @param value
 *            the value to convert
 * @return the converted value
 * @throws ConversionException
 *             thrown if the value cannot be converted to a Color
 */
public static Color toColor(Object value) throws ConversionException {
    if (value instanceof Color) {
        return (Color) value;
    } else if (value instanceof String && !StringUtils.isBlank((String) value)) {
        String color = ((String) value).trim();

        int[] components = new int[3];

        // check the size of the string
        int minlength = components.length * 2;
        if (color.length() < minlength) {
            throw new ConversionException("The value " + value + " can't be converted to a Color");
        }

        // remove the leading #
        if (color.startsWith("#")) {
            color = color.substring(1);
        }

        try {
            // parse the components
            for (int i = 0; i < components.length; i++) {
                components[i] = Integer.parseInt(color.substring(2 * i, 2 * i + 2), HEX_RADIX);
            }

            // parse the transparency
            int alpha;
            if (color.length() >= minlength + 2) {
                alpha = Integer.parseInt(color.substring(minlength, minlength + 2), HEX_RADIX);
            } else {
                alpha = Color.black.getAlpha();
            }

            return new Color(components[0], components[1], components[2], alpha);
        } catch (Exception e) {
            throw new ConversionException("The value " + value + " can't be converted to a Color", e);
        }
    } else {
        throw new ConversionException("The value " + value + " can't be converted to a Color");
    }
}

---

From source file:net.yck.wkrdb.common.shared.PropertyConverter.java

/**
 * Convert the specified value into a Java 5 enum.
 *
 * @param value/*w w  w .  jav a2 s .  c om*/
 *            the value to convert
 * @param cls
 *            the type of the enumeration
 * @return the converted value
 * @throws ConversionException
 *             thrown if the value cannot be converted to an enumeration
 *
 * @since 1.5
 */
static <E extends Enum<E>> E toEnum(Object value, Class<E> cls) throws ConversionException {
    if (value.getClass().equals(cls)) {
        return cls.cast(value);
    } else if (value instanceof String) {
        try {
            return Enum.valueOf(cls, (String) value);
        } catch (Exception e) {
            throw new ConversionException("The value " + value + " can't be converted to a " + cls.getName());
        }
    } else if (value instanceof Number) {
        try {
            E[] enumConstants = cls.getEnumConstants();
            return enumConstants[((Number) value).intValue()];
        } catch (Exception e) {
            throw new ConversionException("The value " + value + " can't be converted to a " + cls.getName());
        }
    } else {
        throw new ConversionException("The value " + value + " can't be converted to a " + cls.getName());
    }
}

---

From source file:org.demoiselle.internal.implementation.ConfigurationEnumValueExtractor.java

@Override
public Object getValue(String prefix, String key, Field field, Configuration configuration) throws Exception {
    String value = configuration.getString(prefix + key);

    if (value != null && !value.trim().equals("")) {
        Object enums[] = field.getType().getEnumConstants();

        for (int i = 0; i < enums.length; i++) {
            if (((Enum<?>) enums[i]).name().equals(value)) {
                return enums[i];
            }// w  w w .j a v a2  s.c o  m
        }
    } else {
        return null;
    }

    throw new ConversionException(getBundle().getString("configuration-not-conversion", value,
            field.getDeclaringClass().getCanonicalName()));
}

---