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acosentino pushed a commit to branch CAMEL-21254
in repository https://gitbox.apache.org/repos/asf/camel.git

commit eaa55abdcd7d2d8d7d859757c8782e0005317b57
Author: Andrea Cosentino <[email protected]>
AuthorDate: Wed Feb 4 12:48:29 2026 +0100

    CAMEL-21254 - Camel-Google-Big-Query: Cannot set a different projectId from 
default in particular conditions
    
    Signed-off-by: Andrea Cosentino <[email protected]>
---
 .../bigquery/GoogleBigQueryConnectionFactory.java  | 15 +++++
 .../google/bigquery/GoogleBigQueryEndpoint.java    |  3 +-
 .../bigquery/sql/GoogleBigQuerySQLEndpoint.java    |  3 +-
 .../unit/GoogleBigQueryConnectionFactoryTest.java  | 64 ++++++++++++++++++++++
 4 files changed, 83 insertions(+), 2 deletions(-)

diff --git 
a/components/camel-google/camel-google-bigquery/src/main/java/org/apache/camel/component/google/bigquery/GoogleBigQueryConnectionFactory.java
 
b/components/camel-google/camel-google-bigquery/src/main/java/org/apache/camel/component/google/bigquery/GoogleBigQueryConnectionFactory.java
index c519ee1eeaa1..2e119ad6e558 100644
--- 
a/components/camel-google/camel-google-bigquery/src/main/java/org/apache/camel/component/google/bigquery/GoogleBigQueryConnectionFactory.java
+++ 
b/components/camel-google/camel-google-bigquery/src/main/java/org/apache/camel/component/google/bigquery/GoogleBigQueryConnectionFactory.java
@@ -41,6 +41,7 @@ public class GoogleBigQueryConnectionFactory {
 
     private String serviceAccountKeyFile;
     private String serviceURL;
+    private String projectId;
     private BigQuery client;
     private CamelContext camelContext;
     private final Lock lock = new ReentrantLock();
@@ -86,6 +87,10 @@ public class GoogleBigQueryConnectionFactory {
         BigQueryOptions.Builder builder = BigQueryOptions.newBuilder()
                 .setCredentials(credentials);
 
+        if (ObjectHelper.isNotEmpty(projectId)) {
+            builder.setProjectId(projectId);
+        }
+
         if (ObjectHelper.isNotEmpty(serviceURL)) {
             builder.setHost(serviceURL);
         }
@@ -141,6 +146,16 @@ public class GoogleBigQueryConnectionFactory {
         return this;
     }
 
+    public String getProjectId() {
+        return projectId;
+    }
+
+    public GoogleBigQueryConnectionFactory setProjectId(String projectId) {
+        this.projectId = projectId;
+        resetClient();
+        return this;
+    }
+
     private void resetClient() {
         lock.lock();
         try {
diff --git 
a/components/camel-google/camel-google-bigquery/src/main/java/org/apache/camel/component/google/bigquery/GoogleBigQueryEndpoint.java
 
b/components/camel-google/camel-google-bigquery/src/main/java/org/apache/camel/component/google/bigquery/GoogleBigQueryEndpoint.java
index 85b7fa44b2a1..dee52470755e 100644
--- 
a/components/camel-google/camel-google-bigquery/src/main/java/org/apache/camel/component/google/bigquery/GoogleBigQueryEndpoint.java
+++ 
b/components/camel-google/camel-google-bigquery/src/main/java/org/apache/camel/component/google/bigquery/GoogleBigQueryEndpoint.java
@@ -69,7 +69,8 @@ public class GoogleBigQueryEndpoint extends DefaultEndpoint 
implements EndpointS
         if (connFactory == null) {
             connFactory = new GoogleBigQueryConnectionFactory()
                     .setCamelContext(getCamelContext())
-                    
.setServiceAccountKeyFile(configuration.getServiceAccountKey());
+                    
.setServiceAccountKeyFile(configuration.getServiceAccountKey())
+                    .setProjectId(configuration.getProjectId());
             configuration.setConnectionFactory(connFactory);
         }
         bigQuery = connFactory.getDefaultClient();
diff --git 
a/components/camel-google/camel-google-bigquery/src/main/java/org/apache/camel/component/google/bigquery/sql/GoogleBigQuerySQLEndpoint.java
 
b/components/camel-google/camel-google-bigquery/src/main/java/org/apache/camel/component/google/bigquery/sql/GoogleBigQuerySQLEndpoint.java
index 64adcad1b17f..1adbd07fef12 100644
--- 
a/components/camel-google/camel-google-bigquery/src/main/java/org/apache/camel/component/google/bigquery/sql/GoogleBigQuerySQLEndpoint.java
+++ 
b/components/camel-google/camel-google-bigquery/src/main/java/org/apache/camel/component/google/bigquery/sql/GoogleBigQuerySQLEndpoint.java
@@ -70,7 +70,8 @@ public class GoogleBigQuerySQLEndpoint extends 
DefaultEndpoint {
         if (connFactory == null) {
             connFactory = new GoogleBigQueryConnectionFactory()
                     .setCamelContext(getCamelContext())
-                    
.setServiceAccountKeyFile(configuration.getServiceAccountKey());
+                    
.setServiceAccountKeyFile(configuration.getServiceAccountKey())
+                    .setProjectId(configuration.getProjectId());
             configuration.setConnectionFactory(connFactory);
         }
         bigQuery = connFactory.getDefaultClient();
diff --git 
a/components/camel-google/camel-google-bigquery/src/test/java/org/apache/camel/component/google/bigquery/unit/GoogleBigQueryConnectionFactoryTest.java
 
b/components/camel-google/camel-google-bigquery/src/test/java/org/apache/camel/component/google/bigquery/unit/GoogleBigQueryConnectionFactoryTest.java
new file mode 100644
index 000000000000..198442707c89
--- /dev/null
+++ 
b/components/camel-google/camel-google-bigquery/src/test/java/org/apache/camel/component/google/bigquery/unit/GoogleBigQueryConnectionFactoryTest.java
@@ -0,0 +1,64 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.component.google.bigquery.unit;
+
+import 
org.apache.camel.component.google.bigquery.GoogleBigQueryConnectionFactory;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+public class GoogleBigQueryConnectionFactoryTest {
+
+    @Test
+    public void testProjectIdSetterGetter() {
+        GoogleBigQueryConnectionFactory factory = new 
GoogleBigQueryConnectionFactory();
+
+        assertNull(factory.getProjectId());
+
+        factory.setProjectId("test-project-id");
+        assertEquals("test-project-id", factory.getProjectId());
+    }
+
+    @Test
+    public void testFluentApiForProjectId() {
+        GoogleBigQueryConnectionFactory factory = new 
GoogleBigQueryConnectionFactory()
+                .setProjectId("my-project")
+                .setServiceAccountKeyFile("key.json")
+                .setServiceURL("https://bigquery.googleapis.com";);
+
+        assertEquals("my-project", factory.getProjectId());
+        assertEquals("key.json", factory.getServiceAccountKeyFile());
+        assertEquals("https://bigquery.googleapis.com";, 
factory.getServiceURL());
+    }
+
+    @Test
+    public void testProjectIdResetsClient() {
+        GoogleBigQueryConnectionFactory factory = new 
GoogleBigQueryConnectionFactory();
+
+        // Set project ID - this should reset the cached client (if any)
+        GoogleBigQueryConnectionFactory result = 
factory.setProjectId("project-a");
+
+        // Verify fluent API returns the same factory
+        assertEquals(factory, result);
+        assertEquals("project-a", factory.getProjectId());
+
+        // Change project ID - should reset and update
+        factory.setProjectId("project-b");
+        assertEquals("project-b", factory.getProjectId());
+    }
+}

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