Create ComponentQueryFilterBuilder.java

Signed-off-by: starfishfive <[email protected]>

src/main/java/org/dependencytrack/persistence/ComponentQueryFilterBuilder.java

@@ -0,0 +1,63 @@
+/*
+ * This file is part of Dependency-Track.
+ *
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright (c) OWASP Foundation. All Rights Reserved.
+ */
+package org.dependencytrack.persistence;
+
+import org.dependencytrack.model.Classifier;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Builder for filters meant to be used with {@link javax.jdo.Query#setFilter} and the query's
+ * parameters that can be passed to {@link alpine.persistence.AbstractAlpineQueryManager#execute}
+ * <br>
+ * Mutable and not threadsafe!
+ */
+class ComponentQueryFilterBuilder {
+
+    private final Map<String, Object> params;
+    private final List<String> filterCriteria;
+
+    ComponentQueryFilterBuilder() {
+        this.params = new HashMap<>();
+        this.filterCriteria = new ArrayList<>();
+    }
+
+    ComponentQueryFilterBuilder withAuthor(string author) {
+        params.put("author", author);
+        filterCriteria.add("(author == :author)");
+        return this;
+    }
+
+    ComponentQueryFilterBuilder withClassifier(Classifier classifier) {
+        params.put("classifier", classifier);
+        filterCriteria.add("(classifier == :classifier)");
+        return this;
+    }
+
+    String buildFilter() {
+        return String.join(" && ", this.filterCriteria);
+    }
+
+    Map<String, Object> getParams() {
+        return params;
+    }
+}