Example usage for org.springframework.core.convert TypeDescriptor isAssignableTo

Introduction

In this page you can find the example usage for org.springframework.core.convert TypeDescriptor isAssignableTo.

Prototype

public boolean isAssignableTo(TypeDescriptor typeDescriptor) 

Source Link

Document

Returns true if an object of this type descriptor can be assigned to the location described by the given type descriptor.

Usage

From source file:cz.jirutka.validator.spring.support.RelaxedBooleanTypeConverterDecorator.java

public boolean canConvert(TypeDescriptor sourceType, TypeDescriptor targetType) {
    return targetType.isAssignableTo(BOOLEAN_TYPE)
            && (sourceType.isAssignableTo(NUMBER_TYPE) || sourceType.isCollection() || sourceType.isArray())
            || decorated.canConvert(sourceType, targetType);
}

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From source file:cz.jirutka.validator.spring.support.RelaxedBooleanTypeConverterDecorator.java

public Object convertValue(Object value, TypeDescriptor sourceType, TypeDescriptor targetType) {
    if (targetType.isAssignableTo(BOOLEAN_TYPE)) {
        if (value instanceof Number) {
            return ((Number) value).intValue() != 0;
        }/*from ww w .j  ava  2 s  .  c om*/
        if (sourceType.isCollection()) {
            return !((Collection) value).isEmpty();
        }
        if (sourceType.isArray()) {
            return ((Object[]) value).length != 0;
        }
        return value;

    } else {
        return decorated.convertValue(value, sourceType, targetType);
    }
}

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From source file:org.springframework.core.convert.support.GenericConversionService.java

public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
    assertNotNull(sourceType, targetType);
    if (logger.isDebugEnabled()) {
        logger.debug(//from w w w  .j a v  a2  s . c  o  m
                "Converting value " + StylerUtils.style(source) + " of " + sourceType + " to " + targetType);
    }
    if (sourceType == TypeDescriptor.NULL) {
        Assert.isTrue(source == null, "The value must be null if sourceType == TypeDescriptor.NULL");
        Object result = convertNullSource(sourceType, targetType);
        if (logger.isDebugEnabled()) {
            logger.debug("Converted to " + StylerUtils.style(result));
        }
        return result;
    }
    if (targetType == TypeDescriptor.NULL) {
        logger.debug("Converted to null");
        return null;
    }
    Assert.isTrue(source == null || sourceType.getObjectType().isInstance(source));
    GenericConverter converter = getConverter(sourceType, targetType);
    if (converter == null) {
        if (source == null || sourceType.isAssignableTo(targetType)) {
            logger.debug("No converter found - returning assignable source object as-is");
            return source;
        } else {
            throw new ConverterNotFoundException(sourceType, targetType);
        }
    }
    Object result = ConversionUtils.invokeConverter(converter, source, sourceType, targetType);
    if (logger.isDebugEnabled()) {
        logger.debug("Converted to " + StylerUtils.style(result));
    }
    return result;
}

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From source file:org.springframework.core.convert.support.GenericConversionService.java

/**
 * Return the default converter if no converter is found for the given sourceType/targetType pair.
 * Returns a NO_OP Converter if the sourceType is assignable to the targetType.
 * Returns <code>null</code> otherwise, indicating no suitable converter could be found.
 * Subclasses may override./*  w ww  .ja  v a  2s  .  c  o  m*/
 * @param sourceType the source type to convert from
 * @param targetType the target type to convert to
 * @return the default generic converter that will perform the conversion
 */
protected GenericConverter getDefaultConverter(TypeDescriptor sourceType, TypeDescriptor targetType) {
    if (sourceType.isAssignableTo(targetType)) {
        logger.trace("Matched default NO_OP_CONVERTER");
        return NO_OP_CONVERTER;
    } else {
        return null;
    }
}

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