Examples with FallbackConverter org.apache.camel.FallbackConverter used on opensource projects

Example 11 with FallbackConverter

use of org.apache.camel.FallbackConverter in project camel by apache.

the class GenericFileConverter method convertTo.

@FallbackConverter
public static Object convertTo(Class<?> type, Exchange exchange, Object value, TypeConverterRegistry registry) throws IOException, NoTypeConversionAvailableException {
    // use a fallback type converter so we can convert the embedded body if the value is GenericFile
    if (GenericFile.class.isAssignableFrom(value.getClass())) {
        GenericFile<?> file = (GenericFile<?>) value;
        Class<?> from = file.getBody().getClass();
        // maybe from is already the type we want
        if (from.isAssignableFrom(type)) {
            return file.getBody();
        }
        // no then try to lookup a type converter
        TypeConverter tc = registry.lookup(type, from);
        if (tc != null) {
            Object body = file.getBody();
            // if the desired type is InputStream or Reader we can use the optimized methods
            if (Reader.class.isAssignableFrom(type)) {
                Reader reader = genericFileToReader(file, exchange);
                if (reader != null) {
                    return reader;
                }
            }
            if (InputStream.class.isAssignableFrom(type)) {
                InputStream is = genericFileToInputStream(file, exchange);
                if (is != null) {
                    return is;
                }
            }
            // which mean we have to use the Reader first, and then convert from there
            if (body instanceof File && file.getCharset() != null) {
                Reader reader = genericFileToReader(file, exchange);
                // we dont want a reader back, so use the type converter registry to find a suitable converter
                TypeConverter readerTc = registry.lookup(type, Reader.class);
                if (readerTc != null) {
                    // use the reader based type converter
                    return readerTc.convertTo(type, exchange, reader);
                }
            }
            // fallback and use the type suitable type converter
            return tc.convertTo(type, exchange, body);
        }
    }
    return null;
}

Example 12 with FallbackConverter

use of org.apache.camel.FallbackConverter in project camel by apache.

the class BeanConverter method convertTo.

@FallbackConverter
public static Object convertTo(Class<?> type, Exchange exchange, Object value, TypeConverterRegistry registry) {
    // use a fallback type converter so we can convert the embedded body if the value is BeanInvocation
    if (BeanInvocation.class.isAssignableFrom(value.getClass())) {
        BeanInvocation bi = (BeanInvocation) value;
        if (bi.getArgs() == null || bi.getArgs().length != 1) {
            // not possible to convert at this time as we try to convert the data passed in at first argument
            return Void.TYPE;
        }
        Class<?> from = bi.getArgs()[0].getClass();
        Object body = bi.getArgs()[0];
        // maybe from is already the type we want
        if (type.isAssignableFrom(from)) {
            return body;
        }
        // no then try to lookup a type converter
        TypeConverter tc = registry.lookup(type, from);
        if (tc != null) {
            return tc.convertTo(type, exchange, body);
        }
    }
    return null;
}