For QA#878, provide services to build a relative URL for a product or category. Add file that was left out of prior commit.

Author: bpolster

core/broadleaf-framework-web/src/main/java/org/broadleafcommerce/core/web/expression/BLCVariableExpression.java

@@ -0,0 +1,81 @@
+/*
+ * #%L
+ * BroadleafCommerce Common Libraries
+ * %%
+ * Copyright (C) 2009 - 2013 Broadleaf Commerce
+ * %%
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * #L%
+ */
+
+package org.broadleafcommerce.core.web.expression;
+
+import org.broadleafcommerce.common.web.BroadleafRequestContext;
+import org.broadleafcommerce.common.web.expression.BroadleafVariableExpression;
+import org.broadleafcommerce.core.catalog.domain.Category;
+import org.broadleafcommerce.core.catalog.domain.Product;
+import org.broadleafcommerce.core.catalog.service.CatalogURLService;
+import org.springframework.util.StringUtils;
+
+import javax.annotation.Resource;
+
+/**
+ * Exposes "blc" to expressions to the Thymeleaf expression context.
+ * 
+ * This class is intended to be augmented using load time weaving by other modules
+ * within Broadleaf.
+ * 
+ * It provides one function (getDate()) primarily just for testing purposes.   This can
+ * be accessed with Thymeleaf as ${#blc.date()}
+ * 
+ * @author bpolster
+ */
+public class BLCVariableExpression implements BroadleafVariableExpression {
+    
+    @Override
+    public String getName() {
+        return "blc";
+    }
+    
+    @Resource(name = "blCatalogURLService")
+    protected CatalogURLService catalogURLService;
+
+    public String relativeURL(Category category) {
+        return catalogURLService.buildRelativeCategoryURL(getCurrentUrl(), category);
+    }
+
+    public String relativeURL(Product product) {
+        return catalogURLService.buildRelativeProductURL(getCurrentUrl(), product);
+    }
+
+    public String relativeURL(String baseUrl, Category category) {
+        return catalogURLService.buildRelativeCategoryURL(baseUrl, category);
+    }
+
+    public String relativeURL(String baseUrl, Product product) {
+        return catalogURLService.buildRelativeProductURL(baseUrl, product);
+    }
+
+    protected String getCurrentUrl() {
+        BroadleafRequestContext brc = BroadleafRequestContext.getBroadleafRequestContext();
+        String currentUrl = "";
+        if (brc != null && brc.getRequest() != null) {
+            currentUrl = brc.getRequest().getRequestURI();
+
+            if (!StringUtils.isEmpty(brc.getRequest().getQueryString())) {
+                currentUrl = currentUrl + "?" + brc.getRequest().getQueryString();
+            }
+        }
+        return currentUrl;
+    }
+}