Allow custom slq statements in PreparedStatement, but without parameters substitution

Author: dxahtepb

Diff for: driver/src/main/java/com/intellij/CouchbaseBaseStatement.java

@@ -20,6 +20,7 @@
 
 import static com.intellij.DriverPropertyInfoHelper.ScanConsistency.getQueryScanConsistency;
 
+@SuppressWarnings("RedundantThrows")
 public abstract class CouchbaseBaseStatement implements Statement {
     protected final Cluster cluster;
     protected final Properties properties;
@@ -56,7 +57,7 @@ void checkClosed() throws SQLException {
     }
 
     @Override
-    public boolean isClosed() {
+    public boolean isClosed() throws SQLException {
         return isClosed;
     }
 
@@ -79,7 +80,7 @@ protected void setNewResultSet(@Nullable ResultSet resultSet) throws SQLExceptio
     }
 
     @Override
-    public boolean getMoreResults() {
+    public boolean getMoreResults() throws SQLException {
         return false;
     }
 
@@ -145,7 +146,7 @@ public int getMaxRows() throws SQLException {
     }
 
     @Override
-    public void setMaxRows(int max) {
+    public void setMaxRows(int max) throws SQLException {
         // todo
     }
 
@@ -170,12 +171,12 @@ public void cancel() throws SQLException {
     }
 
     @Override
-    public SQLWarning getWarnings() {
+    public SQLWarning getWarnings() throws SQLException {
         return null; // todo
     }
 
     @Override
-    public void clearWarnings() {
+    public void clearWarnings() throws SQLException {
         // todo
     }
 
@@ -191,12 +192,12 @@ public void setFetchDirection(int direction) throws SQLException {
     }
 
     @Override
-    public int getFetchDirection() {
+    public int getFetchDirection() throws SQLException {
         return ResultSet.FETCH_FORWARD;
     }
 
     @Override
-    public void setFetchSize(int rows) {
+    public void setFetchSize(int rows) throws SQLException {
         this.fetchSize = rows;
     }
 

Diff for: driver/src/main/java/com/intellij/CouchbaseConnection.java

@@ -1,6 +1,7 @@
 package com.intellij;
 
 import com.couchbase.client.java.Cluster;
+import com.intellij.executor.CouchbaseCustomStatementExecutor;
 import org.jetbrains.annotations.NotNull;
 
 import java.sql.Array;
@@ -11,6 +12,7 @@
 import java.sql.DatabaseMetaData;
 import java.sql.NClob;
 import java.sql.PreparedStatement;
+import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.SQLFeatureNotSupportedException;
 import java.sql.SQLWarning;
@@ -92,6 +94,9 @@ public Statement createStatement(int resultSetType, int resultSetConcurrency, in
     public PreparedStatement prepareStatement(String sql) throws SQLException {
         checkClosed();
         try {
+            if (CouchbaseCustomStatementExecutor.mayExecute(sql)) {
+                return new CouchbaseNoParamsPrepared(sql, new CouchbaseStatement(cluster, properties, isReadOnly));
+            }
             return new CouchbasePreparedStatement(cluster, sql, properties, isReadOnly);
         } catch (Throwable t) {
             throw new SQLException(t.getMessage(), t);
@@ -195,7 +200,11 @@ public void clearWarnings() throws SQLException {
     @Override
     public PreparedStatement prepareStatement(String sql, int resultSetType,
                                               int resultSetConcurrency) throws SQLException {
-        throw new SQLFeatureNotSupportedException();
+        checkClosed();
+        if (resultSetType != ResultSet.TYPE_FORWARD_ONLY || resultSetConcurrency != ResultSet.CONCUR_READ_ONLY) {
+            throw new SQLFeatureNotSupportedException();
+        }
+        return prepareStatement(sql);
     }
 
     @Override