From 6785edfe87225444ea02639f73d0330fe0721c8f Mon Sep 17 00:00:00 2001
From: Demian Katz <demian.katz@villanova.edu>
Date: Thu, 5 Nov 2020 11:36:59 -0500
Subject: [PATCH] Index DOIs from 856 fields. (#1783)
---
.../src/org/vufind/index/DoiTools.java | 54 +++++++++++++++++++
1 file changed, 54 insertions(+)
create mode 100644 import/index_java/src/org/vufind/index/DoiTools.java
diff --git a/import/index_java/src/org/vufind/index/DoiTools.java b/import/index_java/src/org/vufind/index/DoiTools.java
new file mode 100644
index 00000000000..d558ece623f
--- /dev/null
+++ b/import/index_java/src/org/vufind/index/DoiTools.java
@@ -0,0 +1,54 @@
+package org.vufind.index;
+/**
+ * DOI indexing routines.
+ *
+ * Copyright (C) Villanova University 2020.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+import java.util.LinkedHashSet;
+import java.util.Set;
+import org.marc4j.marc.Record;
+import org.solrmarc.index.SolrIndexer;
+
+/**
+ * Call number indexing routines.
+ */
+public class DoiTools
+{
+ /**
+ * Extract DOIs from URLs with the specified prefix
+ * @param record MARC record
+ * @param fieldSpec taglist for URL fields
+ * @param baseUrl Base URL that will be followed by a DOI
+ * @return Set of DOIs
+ */
+ public Set<String> getDoiFromUrl(final Record record, String fieldSpec, String baseUrl) {
+ // Initialize our return value:
+ Set<String> result = new LinkedHashSet<String>();
+
+ // Loop through the specified MARC fields:
+ Set<String> input = SolrIndexer.instance().getFieldList(record, fieldSpec);
+ for (String current: input) {
+ // If the base URL is found in the string, crop it off for our DOI!
+ if (current.startsWith(baseUrl)) {
+ result.add(current.substring(baseUrl.length()));
+ }
+ }
+
+ // If we found no matches, return null; otherwise, return our results:
+ return result.isEmpty() ? null : result;
+ }
+}
--
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