Example usage for com.google.gwt.core.ext.typeinfo JParameterizedType isAssignableFrom

Introduction

In this page you can find the example usage for com.google.gwt.core.ext.typeinfo JParameterizedType isAssignableFrom.

Prototype

boolean isAssignableFrom(JClassType possibleSubtype);

Source Link

Document

Returns true if this JClassType is assignable from the specified JClassType parameter.

Usage

From source file:com.hiramchirino.restygwt.rebind.JsonEncoderDecoderInstanceLocator.java

License:Apache License

private String encodeDecodeExpression(JType type, String expression, Style style, String encoderMethod,
        String mapMethod, String setMethod, String listMethod) throws UnableToCompleteException {

    if (null != type.isEnum()) {
        return type.getQualifiedSourceName() + ".valueOf(" + encodeDecodeExpression(STRING_TYPE, expression,
                style, encoderMethod, mapMethod, setMethod, listMethod);
    }//  w  w  w  . ja v  a 2 s .c  o  m

    String encoderDecoder = getEncoderDecoder(type, logger);
    if (encoderDecoder != null) {
        return encoderDecoder + "." + encoderMethod + "(" + expression + ")";
    }

    JClassType clazz = type.isClassOrInterface();
    if (isCollectionType(clazz)) {
        JParameterizedType parameterizedType = type.isParameterized();
        if (parameterizedType == null || parameterizedType.getTypeArgs() == null) {
            error("Collection types must be parameterized.");
        }
        JClassType[] types = parameterizedType.getTypeArgs();

        if (parameterizedType.isAssignableTo(MAP_TYPE)) {
            if (types.length != 2) {
                error("Map must define two and only two type parameters");
            }
            if (types[0] != STRING_TYPE) {
                error("Map's first type parameter must be of type String");
            }
            encoderDecoder = getEncoderDecoder(types[1], logger);
            if (encoderDecoder != null) {
                return mapMethod + "(" + expression + ", " + encoderDecoder + ", " + JSON_CLASS + ".Style."
                        + style.name() + ")";
            }
        } else if (parameterizedType.isAssignableTo(SET_TYPE)) {
            if (types.length != 1) {
                error("Set must define one and only one type parameter");
            }
            encoderDecoder = getEncoderDecoder(types[0], logger);
            if (encoderDecoder != null) {
                return setMethod + "(" + expression + ", " + encoderDecoder + ")";
            }
        } else if (parameterizedType.isAssignableFrom(LIST_TYPE)) {
            if (types.length != 1) {
                error("List must define one and only one type parameter");
            }
            encoderDecoder = getEncoderDecoder(types[0], logger);
            debug("type encoder for: " + types[0] + " is " + encoderDecoder);
            if (encoderDecoder != null) {
                return listMethod + "(" + expression + ", " + encoderDecoder + ")";
            }
        }
    }

    error("Do not know how to encode/decode " + type);
    return null;
}

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From source file:org.fusesource.restygwt.rebind.JsonEncoderDecoderInstanceLocator.java

License:Apache License

private String encodeDecodeExpression(JType type, String expression, Style style, String encoderMethod,
        String mapMethod, String setMethod, String listMethod) throws UnableToCompleteException {

    if (null != type.isEnum()) {
        if (encoderMethod.equals("encode")) {
            return encodeDecodeExpression(STRING_TYPE, expression + ".toString()", style, encoderMethod,
                    mapMethod, setMethod, listMethod);
        } else {/*from  w  w  w. j  a  v  a2s.c  om*/
            return type.getQualifiedSourceName() + ".valueOf(" + encodeDecodeExpression(STRING_TYPE, expression,
                    style, encoderMethod, mapMethod, setMethod, listMethod) + ")";
        }
    }

    String encoderDecoder = getEncoderDecoder(type, logger);
    if (encoderDecoder != null) {
        return encoderDecoder + "." + encoderMethod + "(" + expression + ")";
    }

    JClassType clazz = type.isClassOrInterface();
    if (isCollectionType(clazz)) {
        JParameterizedType parameterizedType = type.isParameterized();
        if (parameterizedType == null || parameterizedType.getTypeArgs() == null) {
            error("Collection types must be parameterized.");
        }
        JClassType[] types = parameterizedType.getTypeArgs();

        if (parameterizedType.isAssignableTo(MAP_TYPE)) {
            if (types.length != 2) {
                error("Map must define two and only two type parameters");
            }
            if (types[0] != STRING_TYPE) {
                error("Map's first type parameter must be of type String");
            }
            encoderDecoder = getEncoderDecoder(types[1], logger);
            if (encoderDecoder != null) {
                return mapMethod + "(" + expression + ", " + encoderDecoder + ", " + JSON_CLASS + ".Style."
                        + style.name() + ")";
            }
        } else if (parameterizedType.isAssignableTo(SET_TYPE)) {
            if (types.length != 1) {
                error("Set must define one and only one type parameter");
            }
            encoderDecoder = getEncoderDecoder(types[0], logger);
            if (encoderDecoder != null) {
                return setMethod + "(" + expression + ", " + encoderDecoder + ")";
            }
        } else if (parameterizedType.isAssignableFrom(LIST_TYPE)) {
            if (types.length != 1) {
                error("List must define one and only one type parameter");
            }
            encoderDecoder = getEncoderDecoder(types[0], logger);
            debug("type encoder for: " + types[0] + " is " + encoderDecoder);
            if (encoderDecoder != null) {
                return listMethod + "(" + expression + ", " + encoderDecoder + ")";
            }
        }
    }

    error("Do not know how to encode/decode " + type);
    return null;
}

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