From 36f0ced4b46a1823a15d3e33e664891c92618b78 Mon Sep 17 00:00:00 2001
From: Alexander Alexeev
Date: Fri, 18 Nov 2016 01:30:39 +0700
Subject: search service for full text search implementation; search bean
 configuration

---
 .../service/search/SphinxSearchServiceImpl.java    | 85 ++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 juick-server/src/main/java/com/juick/service/search/SphinxSearchServiceImpl.java

(limited to 'juick-server/src/main/java/com/juick/service/search/SphinxSearchServiceImpl.java')

diff --git a/juick-server/src/main/java/com/juick/service/search/SphinxSearchServiceImpl.java b/juick-server/src/main/java/com/juick/service/search/SphinxSearchServiceImpl.java
new file mode 100644
index 00000000..de0a101f
--- /dev/null
+++ b/juick-server/src/main/java/com/juick/service/search/SphinxSearchServiceImpl.java
@@ -0,0 +1,85 @@
+package com.juick.service.search;
+
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.core.namedparam.MapSqlParameterSource;
+import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
+import org.springframework.util.Assert;
+
+import javax.sql.DataSource;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Created by aalexeev on 11/18/16.
+ */
+
+/* Note
+ * Don't use any spring's component annotation (such as @Repository, @Service, @Component, etc).
+ * This class directly used by spring's search configuration class
+ */
+public class SphinxSearchServiceImpl implements SearchService {
+    private static final int DEFAULT_MAX_RESULT = 25;
+
+    private final NamedParameterJdbcTemplate namedParameterSearchJdbcTemplate;
+
+    private int maxResult = DEFAULT_MAX_RESULT;
+
+
+    public SphinxSearchServiceImpl(JdbcTemplate searchJdbcTemplate) {
+        Assert.notNull(searchJdbcTemplate);
+        this.namedParameterSearchJdbcTemplate = new NamedParameterJdbcTemplate(searchJdbcTemplate);
+    }
+
+    public SphinxSearchServiceImpl(DataSource searchDataSource) {
+        Assert.notNull(searchDataSource);
+        this.namedParameterSearchJdbcTemplate = new NamedParameterJdbcTemplate(searchDataSource);
+    }
+
+    @Override
+    public List<Integer> searchInAllMessages(final String searchString, final int messageIdBefore) {
+        if (StringUtils.isBlank(searchString))
+            return Collections.emptyList();
+
+        MapSqlParameterSource sqlParameterSource = new MapSqlParameterSource()
+                .addValue("search", searchString)
+                .addValue("before", messageIdBefore)
+                .addValue("limit", maxResult);
+
+        return namedParameterSearchJdbcTemplate.queryForList(
+                "SELECT id AS message_id FROM messages WHERE MATCH(:search) " +
+                        (messageIdBefore > 0 ?
+                                " AND id < :before " : "") +
+                        " ORDER BY id DESC LIMIT :limit",
+                sqlParameterSource,
+                Integer.class);
+    }
+
+    @Override
+    public List<Integer> searchByStringAndUser(final String searchString, final int userId, int messageIdBefore) {
+        if (StringUtils.isBlank(searchString))
+            return Collections.emptyList();
+
+        MapSqlParameterSource sqlParameterSource = new MapSqlParameterSource()
+                .addValue("search", searchString)
+                .addValue("userId", userId)
+                .addValue("before", messageIdBefore)
+                .addValue("limit", maxResult);
+
+        return namedParameterSearchJdbcTemplate.queryForList(
+                "SELECT id AS message_id FROM messages WHERE user_id = :userId AND MATCH(:search) " +
+                        (messageIdBefore > 0 ?
+                                " AND id < :before " : "") +
+                        " ORDER BY id DESC LIMIT :limit",
+                sqlParameterSource,
+                Integer.class);
+    }
+
+    @Override
+    public void setMaxResult(int maxResult) {
+        if (maxResult <= 0)
+            throw new IllegalArgumentException("maxResult value (" + maxResult + ") must be greater then 0");
+
+        this.maxResult = maxResult;
+    }
+}
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