Initial commit

lib/assets/javascripts/builder/helpers/analysis-node-utils.js

@@ -0,0 +1,51 @@
+// Get the source node from an analysis node
+function getSourceNode (nodeModel) {
+  var source;
+  if (nodeModel.get('type') === 'source') {
+    source = nodeModel;
+  } else {
+    var primarySource = nodeModel.getPrimarySource && nodeModel.getPrimarySource();
+    if (primarySource && primarySource.get('type') === 'source') {
+      source = primarySource;
+    } else {
+      source = getSourceNode(primarySource);
+    }
+  }
+
+  return source;
+}
+
+// Evaluates predicate for the analysis chain from nodeModel
+function someNode (nodeModel, predicate) {
+  if (predicate(nodeModel)) {
+    return nodeModel;
+  }
+
+  if (nodeModel.get('type') !== 'source') {
+    const source = nodeModel.getPrimarySource && nodeModel.getPrimarySource();
+
+    if (source) {
+      return someNode(source, predicate);
+    }
+  }
+
+  return false;
+}
+
+function hasAnalysisType (type) {
+  return function (node) {
+    return node.get('type') === type;
+  };
+}
+
+const hasTradeArea = hasAnalysisType('trade-area');
+const hasSQLFunction = hasAnalysisType('deprecated-sql-function');
+
+module.exports = {
+  nodeHasTradeArea: node => someNode(node, hasTradeArea),
+  nodeHasSQLFunction: node => someNode(node, hasSQLFunction),
+
+  // These are defined outside because they're recursive
+  getSourceNode,
+  someNode
+};