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1 files changed, 38 insertions, 0 deletions

diff --git a/config-model/src/main/java/com/yahoo/vespa/model/builder/xml/dom/chains/DependenciesBuilder.java b/config-model/src/main/java/com/yahoo/vespa/model/builder/xml/dom/chains/DependenciesBuilder.java
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+++ b/config-model/src/main/java/com/yahoo/vespa/model/builder/xml/dom/chains/DependenciesBuilder.java
@@ -0,0 +1,38 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.vespa.model.builder.xml.dom.chains;
+
+import com.yahoo.component.chain.dependencies.Dependencies;
+import com.yahoo.config.model.builder.xml.XmlHelper;
+import org.w3c.dom.Element;
+
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Builds Dependencies (provides, before, after) from an element.
+ * @author tonytv
+ */
+public class DependenciesBuilder {
+    private final Dependencies dependencies;
+
+    public DependenciesBuilder(Element spec) {
+
+        Set<String> provides = read(spec, "provides");
+        Set<String> before = read(spec, "before");
+        Set<String> after = read(spec, "after");
+
+        dependencies = new Dependencies(provides, before, after);
+    }
+
+    public Dependencies build() {
+        return dependencies;
+    }
+
+    private Set<String> read(Element spec, String name) {
+        Set<String> symbols = new HashSet<>();
+        symbols.addAll(XmlHelper.valuesFromElements(spec, name));
+        symbols.addAll(XmlHelper.spaceSeparatedSymbolsFromAttribute(spec, name));
+
+        return symbols;
+    }
+}