Add support for ALTER TABLe command. Upgrade buildToolsVersion to 27.0.3 - min revision for com.android.tools.build:gradle:3.1.4.

Issue: https://github.com/andpor/react-native-sqlite-storage/issues/312

Author: Andrew Porebski

src/android-native/build.gradle

@@ -17,7 +17,7 @@ def safeExtGet(prop, fallback) {
 
 android {
     compileSdkVersion safeExtGet('compileSdkVersion', 23)
-    buildToolsVersion safeExtGet('buildToolsVersion', '23.0.1')
+    buildToolsVersion safeExtGet('buildToolsVersion', '27.0.3')
 
     defaultConfig {
         minSdkVersion safeExtGet('minSdkVersion', 16)
@@ -39,6 +39,6 @@ repositories {
 }
 
 dependencies {
-    compile 'com.facebook.react:react-native:0.14.+'
-    compile files('libs/sqlite-connector.jar')
+    implementation 'com.facebook.react:react-native:0.14.+'
+    implementation files('libs/sqlite-connector.jar')
 }

src/android-native/src/main/java/io/liteglue/SQLiteAndroidDatabase.java

@@ -172,6 +172,25 @@ else if (queryType == QueryType.insert && queryParams != null) {
                     }
                 }
 
+                // ALTER:
+                else if (queryType == QueryType.alter) {
+                    FLog.d("executeSqlBatch","ALTER");
+                    needRawQuery = false;
+
+                    try {
+                        mydb.execSQL(query);
+
+                        queryResult = Arguments.createMap();
+                        queryResult.putInt("rowsAffected", 0);
+                    } catch (SQLiteException ex) {
+                        // report error result with the error message
+                        // could be constraint violation or some other error
+                        ex.printStackTrace();
+                        errorMessage = ex.getMessage();
+                        FLog.v("executeSqlBatch", "SQLiteDatabase.execSQL(): Error=" + errorMessage);
+                    }
+                }
+
                 else if (queryType == QueryType.begin) {
                     needRawQuery = false;
                     try {
@@ -367,6 +386,7 @@ static enum QueryType {
         insert,
         delete,
         select,
+        alter,
         begin,
         commit,
         rollback,

src/android/build.gradle

@@ -17,7 +17,7 @@ def safeExtGet(prop, fallback) {
 
 android {
     compileSdkVersion safeExtGet('compileSdkVersion', 23)
-    buildToolsVersion safeExtGet('buildToolsVersion', '23.0.1')
+    buildToolsVersion safeExtGet('buildToolsVersion', '27.0.3')
 
     defaultConfig {
         minSdkVersion safeExtGet('minSdkVersion', 16)
@@ -35,5 +35,5 @@ repositories {
 }
 
 dependencies {
-    compile 'com.facebook.react:react-native:0.14.+'
+    implementation 'com.facebook.react:react-native:0.14.+'
 }

src/android/src/main/java/org/pgsqlite/SQLitePlugin.java

@@ -637,6 +637,7 @@ private void executeSqlBatch(String dbname, String[] queries, ReadableArray[] qu
 
                 // INSERT:
                 else if (queryType == QueryType.insert && queryParams != null) {
+                    FLog.d("executeSqlBatch","INSERT");
                     needRawQuery = false;
 
                     SQLiteStatement myStatement = mydb.compileStatement(query);
@@ -666,6 +667,25 @@ else if (queryType == QueryType.insert && queryParams != null) {
                     }
                 }
 
+                // ALTER:
+                else if (queryType == QueryType.alter) {
+                    FLog.d("executeSqlBatch","ALTER");
+                    needRawQuery = false;
+
+                    try {
+                        mydb.execSQL(query);
+
+                        queryResult = Arguments.createMap();
+                        queryResult.putInt("rowsAffected", 0);
+                    } catch (SQLiteException ex) {
+                        // report error result with the error message
+                        // could be constraint violation or some other error
+                        ex.printStackTrace();
+                        errorMessage = ex.getMessage();
+                        FLog.v("executeSqlBatch", "SQLiteDatabase.execSQL(): Error=" + errorMessage);
+                    }
+                }
+
                 else if (queryType == QueryType.begin) {
                     needRawQuery = false;
                     try {
@@ -1027,6 +1047,7 @@ private enum QueryType {
         insert,
         delete,
         select,
+        alter,
         begin,
         commit,
         rollback,