From a6e17eb7aa1366a29a1c23b4bd40a3eb253f8ca9 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Sat, 17 Dec 2022 21:19:46 +0300
Subject: postgres: search service

---
 .../java/com/juick/service/PostgreGINService.java  | 97 ++++++++++++++++++++++
 .../com/juick/service/SphinxSearchService.java     |  2 +
 2 files changed, 99 insertions(+)
 create mode 100644 src/main/java/com/juick/service/PostgreGINService.java

(limited to 'src/main/java/com/juick')

diff --git a/src/main/java/com/juick/service/PostgreGINService.java b/src/main/java/com/juick/service/PostgreGINService.java
new file mode 100644
index 00000000..f4f70bf4
--- /dev/null
+++ b/src/main/java/com/juick/service/PostgreGINService.java
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2008-2020, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.service;
+
+import com.juick.model.User;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.jdbc.core.namedparam.MapSqlParameterSource;
+import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
+
+import javax.inject.Inject;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+/**
+ * Created by aalexeev on 11/18/16.
+ */
+
+@Repository
+@ConditionalOnProperty(name = "spring.sql.init.platform", havingValue = "postgresql")
+@Transactional(readOnly = true)
+public class PostgreGINService extends BaseJdbcService implements SearchService {
+    private static final int DEFAULT_MAX_RESULT = 20;
+
+    private int maxResult = DEFAULT_MAX_RESULT;
+
+    @Inject
+    UserService userService;
+
+    public String sortHint(String searchString) {
+        boolean isOneWord = searchString.split("[^\\S\\+]+").length == 1;
+        return isOneWord ? " message_id desc" : String.format(" ts_rank(to_tsvector('russian', \"txt\"), plainto_tsquery('russian', '%s')) DESC, message_id desc", searchString);
+    }
+
+    @Override
+    public List<Integer> searchInAllMessages(User visitor, final String searchString, final int page) {
+        if (StringUtils.isBlank(searchString))
+            return Collections.emptyList();
+
+        String usersFilter = userService.getUserBLUsers(visitor.getUid()).stream().map(u -> String.valueOf(u.getUid())).collect(Collectors.joining(","));
+        var filter = usersFilter.isBlank() ?
+                "to_tsvector('russian', txt) @@ plainto_tsquery('russian', '" + searchString + "')"
+                : "to_tsvector('russian', txt) @@ plainto_tsquery('russian', '" + searchString + "') AND messages.user_id not in (" + usersFilter + ")";
+        var offset = page * maxResult;
+        var sql = String.format("""
+                SELECT messages.message_id FROM messages_txt inner join messages
+                on messages.message_id = messages_txt.message_id
+                WHERE %s
+                ORDER BY %s
+                LIMIT %d OFFSET %d
+                """, filter, sortHint(searchString), maxResult, offset);
+        return getJdbcTemplate().queryForList(sql, Integer.class);
+    }
+
+    @Override
+    public List<Integer> searchByStringAndUser(User visitor, final String searchString, final int userId, int page) {
+        if (StringUtils.isBlank(searchString))
+            return Collections.emptyList();
+
+        var offset = page * maxResult;
+        var sql = String.format("""
+                SELECT messages.message_id FROM messages_txt inner join messages
+                on messages.message_id = messages_txt.message_id
+                WHERE to_tsvector('russian', txt) @@ plainto_tsquery('russian', '%s') AND user_id=%d
+                ORDER BY %s
+                LIMIT %d OFFSET %d
+                """, searchString, userId, sortHint(searchString), maxResult, offset);
+        return getJdbcTemplate().queryForList(sql, 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;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/juick/service/SphinxSearchService.java b/src/main/java/com/juick/service/SphinxSearchService.java
index 302f10de..06faafc5 100644
--- a/src/main/java/com/juick/service/SphinxSearchService.java
+++ b/src/main/java/com/juick/service/SphinxSearchService.java
@@ -19,6 +19,7 @@ package com.juick.service;
 
 import com.juick.model.User;
 import org.apache.commons.lang3.StringUtils;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.stereotype.Repository;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -34,6 +35,7 @@ import java.util.stream.Collectors;
  */
 
 @Repository
+@ConditionalOnProperty(name = "spring.sql.init.platform", havingValue = "mysql")
 @Transactional(readOnly = true)
 public class SphinxSearchService extends BaseJdbcService implements SearchService {
     private static final int DEFAULT_MAX_RESULT = 20;
-- 
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