Examples of grails.validation.ConstrainedProperty

grails.validation.ConstrainedProperty
Provides the ability to set contraints against a properties of a class. Constraints can either be set via the property setters or via the
```
applyConstraint(String constraintName, Object constrainingValue)
```
in combination with a constraint constant. Example: ... ConstrainedProperty cp = new ConstrainedProperty(owningClass, propertyName, propertyType); if (cp.supportsConstraint(ConstrainedProperty.EMAIL_CONSTRAINT)) { cp.applyConstraint(ConstrainedProperty.EMAIL_CONSTRAINT, new Boolean(true)); } Alternatively constraints can be applied directly using the java bean getters/setters if a static (as oposed to dynamic) approach to constraint creation is possible: cp.setEmail(true) @author Graeme Rocher @since 07-Nov-2005

        }


        @Override
        public Object getProperty(String name) {
            if (urlDefiningMode) {
                final ConstrainedProperty newConstrained = new ConstrainedProperty(UrlMapping.class, name, String.class);
                previousConstraints.add(newConstrained);
                return CAPTURING_WILD_CARD;
            }
            return super.getProperty(name);
        }

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                uriBuilder.append(parentResource.uri);
            }
            else {
                if (parentResource.controllerName != null) {
                    uriBuilder.append(parentResource.uri).append(SLASH).append(CAPTURING_WILD_CARD);
                    constrainedList.add(new ConstrainedProperty(UrlMapping.class, parentResource.controllerName + "Id", String.class));
                }
            }


            uriBuilder.append(uri);
            return uriBuilder.toString();

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        }


        protected UrlMapping createEditActionResourcesRestfulMapping(String controllerName, Object pluginName, Object namespace, String version, UrlMappingData urlData, List<ConstrainedProperty> constrainedList) {
            UrlMappingData editUrlMappingData = urlData.createRelative('/' + CAPTURING_WILD_CARD + "/edit");
            List<ConstrainedProperty> editUrlMappingConstraints = new ArrayList<ConstrainedProperty>(constrainedList);
            editUrlMappingConstraints.add(new ConstrainedProperty(UrlMapping.class, "id", String.class));


            return new RegexUrlMapping(editUrlMappingData,controllerName, ACTION_EDIT, namespace, pluginName, null, HttpMethod.GET.toString(), version,editUrlMappingConstraints.toArray(new ConstrainedProperty[editUrlMappingConstraints.size()]) , servletContext);
        }

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            return new RegexUrlMapping(showUrlMappingData,controllerName, ACTION_SHOW, namespace, pluginName, null, HttpMethod.GET.toString(), version,showUrlMappingConstraints.toArray(new ConstrainedProperty[showUrlMappingConstraints.size()]) , servletContext);
        }


        private List<ConstrainedProperty> createConstraintsWithIdAndFormat(List<ConstrainedProperty> constrainedList) {
            List<ConstrainedProperty> showUrlMappingConstraints = new ArrayList<ConstrainedProperty>(constrainedList);
            showUrlMappingConstraints.add(new ConstrainedProperty(UrlMapping.class, "id", String.class));
            ConstrainedProperty cp = new ConstrainedProperty(UrlMapping.class, "format", String.class);
            cp.setNullable(true);
            showUrlMappingConstraints.add(cp);
            return showUrlMappingConstraints;
        }

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            return new RegexUrlMapping(indexActionUrlMappingData, controllerName, ACTION_INDEX, namespace, pluginName, null, HttpMethod.GET.toString(), version,indexUrlMappingConstraints.toArray(new ConstrainedProperty[indexUrlMappingConstraints.size()]), servletContext);
        }


        private List<ConstrainedProperty> createFormatOnlyConstraints(List<ConstrainedProperty> constrainedList) {
            List<ConstrainedProperty> indexUrlMappingConstraints = new ArrayList<ConstrainedProperty>(constrainedList);
            ConstrainedProperty cp = new ConstrainedProperty(UrlMapping.class, "format", String.class);
            cp.setNullable(true);
            indexUrlMappingConstraints.add(cp);
            return indexUrlMappingConstraints;
        }

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    }


    public boolean hasRuntimeVariable(String name) {
        if (constraints != null) {
            for (int i = 0; i < constraints.length; i++) {
                ConstrainedProperty cp = constraints[i];
                if (cp.getPropertyName().equals(name)) return true;
            }
        }
        return false;
    }

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            ConstrainedProperty[] params = mapping.getConstraints();
            Set<String> requiredParams = new HashSet<String>();
            int optionalIndex = -1;
            for (int j = 0; j < params.length; j++) {
                ConstrainedProperty param = params[j];
                if (!param.isNullable()) {
                    requiredParams.add(param.getPropertyName());
                }
                else {
                    optionalIndex = j;
                    break;
                }
            }
            UrlMappingKey key = new UrlMappingKey(controllerName, actionName, namespace, pluginName,httpMethod, version,requiredParams);
            mappingsLookup.put(key, mapping);


            UrlMappingsListKey listKey = new UrlMappingsListKey(controllerName, actionName, namespace, pluginName,httpMethod, version);
            mappingsListLookup.put(listKey, key);


            if (LOG.isDebugEnabled()) {
                LOG.debug("Reverse mapping: " + key + " -> " + mapping);
            }
            Set<String> requiredParamsAndOptionals = new HashSet<String>(requiredParams);
            if (optionalIndex > -1) {
                for (int j = optionalIndex; j < params.length; j++) {
                    ConstrainedProperty param = params[j];
                    requiredParamsAndOptionals.add(param.getPropertyName());
                    key = new UrlMappingKey(controllerName, actionName, namespace, pluginName,httpMethod, version,new HashSet<String>(requiredParamsAndOptionals));
                    mappingsLookup.put(key, mapping);


                    listKey = new UrlMappingsListKey(controllerName, actionName, namespace, pluginName,httpMethod, version);
                    mappingsListLookup.put(listKey, key);

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                constraintUpperBound--;
                constraints[constraintUpperBound].setNullable(true);
            }


            for (int i = 0; i < constraintUpperBound; i++) {
                ConstrainedProperty constraint = constraints[i];
                if (currentToken > tokensLength) break;
                String token = tokens[currentToken];
                int shiftLength = 3;
                pos = token.indexOf(CAPTURED_WILDCARD, pos);
                while(pos == -1) {
                    boolean isLastToken = currentToken == tokensLength-1;
                    if (currentToken < tokensLength) {


                        token = tokens[++currentToken];
                        // special handling for last token to deal with optional extension
                        if (isLastToken) {
                            if (token.startsWith(CAPTURED_WILDCARD + '?') ) {
                                constraint.setNullable(true);
                            }
                            if (token.endsWith(OPTIONAL_EXTENSION_WILDCARD + '?')) {
                                constraints[constraints.length-1].setNullable(true);
                            }
                        }
                        else {
                            pos = token.indexOf(CAPTURED_WILDCARD, pos);
                        }
                    }
                    else {
                        break;
                    }
                }


                if (pos == -1) {
                    constraint.setNullable(true);
                }
                else if (pos + shiftLength < token.length() && token.charAt(pos + shiftLength) == '?') {
                    constraint.setNullable(true);
                }


                // Move on to the next place-holder.
                pos += shiftLength;
                if (token.indexOf(CAPTURED_WILDCARD, pos) == -1) {

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            }
            Matcher m = OPTIONAL_EXTENSION_WILDCARD_PATTERN.matcher(token);
            if (m.find()) {


                if (token.startsWith(CAPTURED_WILDCARD)) {
                    ConstrainedProperty prop = constraints[paramIndex++];
                    String propName = prop.getPropertyName();


                    Object value = paramValues.get(propName);
                    usedParams.add(propName);


                    if (value != null) {
                        token = token.replaceFirst(DOUBLE_WILDCARD_PATTERN.pattern(), value.toString());
                    }
                    else if (prop.isNullable()) {
                        break;
                    }
                }
                uri.append(SLASH);
                ConstrainedProperty prop = constraints[paramIndex++];
                String propName = prop.getPropertyName();
                Object value = paramValues.get(propName);
                usedParams.add(propName);
                if (value != null) {
                    String ext = "." + value;
                    uri.append(token.replace(OPTIONAL_EXTENSION_WILDCARD+'?', ext).replace(OPTIONAL_EXTENSION_WILDCARD, ext));
                }
                else {
                    uri.append(token.replace(OPTIONAL_EXTENSION_WILDCARD+'?', "").replace(OPTIONAL_EXTENSION_WILDCARD, ""));
                }


                continue;
            }
            if (token.endsWith("?")) {
                token = token.substring(0,token.length()-1);
            }
            m = DOUBLE_WILDCARD_PATTERN.matcher(token);
            if (m.find()) {
                StringBuffer buf = new StringBuffer();
                do {
                    ConstrainedProperty prop = constraints[paramIndex++];
                    String propName = prop.getPropertyName();
                    Object value = paramValues.get(propName);
                    usedParams.add(propName);
                    if (value == null && !prop.isNullable()) {
                        throw new UrlMappingException("Unable to create URL for mapping [" + this +
                            "] and parameters [" + paramValues + "]. Parameter [" +
                            prop.getPropertyName() + "] is required, but was not specified!");
                    }
                    else if (value == null) {
                        m.appendReplacement(buf, "");
                    }
                    else {

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        String lastGroup = null;
        for (int i = 0; i < groupCount; i++) {
            lastGroup = m.group(i + 1);
            // if null optional.. ignore
            if (i == groupCount - 1 && hasOptionalExtension) {
                ConstrainedProperty cp = constraints[constraints.length-1];
                cp.validate(this, lastGroup, errors);


                if (errors.hasErrors()) {
                    return null;
                }


                params.put(cp.getPropertyName(), lastGroup);
                break;
            }
            else {
                if (lastGroup == null) continue;
                int j = lastGroup.indexOf('?');
                if (j > -1) {
                    lastGroup = lastGroup.substring(0, j);
                }
                if (constraints.length > i) {
                    ConstrainedProperty cp = constraints[i];
                    cp.validate(this, lastGroup, errors);


                    if (errors.hasErrors()) {
                        return null;
                    }


                    params.put(cp.getPropertyName(), lastGroup);
                }
            }


        }

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