From 58f108f8ede73b33eba5faf5d041a8c871624b5f Mon Sep 17 00:00:00 2001
From: Adrika Gupta <adrikagupta@google.com>
Date: Mon, 13 Apr 2026 09:12:29 +0000
Subject: [PATCH] fix classcastexception in bq source plugin

---
 pom.xml                                              |  2 +-
 .../source/PartitionedBigQueryInputFormat.java       | 12 ++++++++++--
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/pom.xml b/pom.xml
index 30bd75657..f166848dd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,7 +20,7 @@
 
   <groupId>io.cdap.plugin</groupId>
   <artifactId>google-cloud</artifactId>
-  <version>0.23.6</version>
+  <version>0.23.7-SNAPSHOT</version>
   <name>Google Cloud Plugins</name>
   <packaging>jar</packaging>
   <description>Plugins for Google Big Query</description>
diff --git a/src/main/java/io/cdap/plugin/gcp/bigquery/source/PartitionedBigQueryInputFormat.java b/src/main/java/io/cdap/plugin/gcp/bigquery/source/PartitionedBigQueryInputFormat.java
index fb3cd84eb..e3a195e0d 100644
--- a/src/main/java/io/cdap/plugin/gcp/bigquery/source/PartitionedBigQueryInputFormat.java
+++ b/src/main/java/io/cdap/plugin/gcp/bigquery/source/PartitionedBigQueryInputFormat.java
@@ -24,6 +24,7 @@
 import com.google.api.services.bigquery.model.TableReference;
 import com.google.cloud.bigquery.RangePartitioning;
 import com.google.cloud.bigquery.StandardTableDefinition;
+import com.google.cloud.bigquery.TableDefinition;
 import com.google.cloud.bigquery.TableDefinition.Type;
 import com.google.cloud.bigquery.TimePartitioning;
 import com.google.cloud.hadoop.io.bigquery.AbstractBigQueryInputFormat;
@@ -139,7 +140,7 @@ private void processQuery(JobContext context) throws IOException, InterruptedExc
         datasetProjectId, datasetId, tableName, serviceAccount, isServiceAccountFilePath, null);
     Type type = Objects.requireNonNull(bigQueryTable).getDefinition().getType();
     Boolean isPartitionFilterRequired = bigQueryTable.getRequirePartitionFilter();
-    StandardTableDefinition tableDefinition = Objects.requireNonNull(bigQueryTable).getDefinition();
+    TableDefinition tableDefinition = Objects.requireNonNull(bigQueryTable).getDefinition();
 
     String query;
     if (type == Type.VIEW || type == Type.MATERIALIZED_VIEW || type == Type.EXTERNAL) {
@@ -173,7 +174,7 @@ private void processQuery(JobContext context) throws IOException, InterruptedExc
   @VisibleForTesting
   String generateQuery(String partitionFromDate, String partitionToDate, String filter,
       String datasetProject, String dataset, String table, String limit, String orderBy,
-      Boolean isPartitionFilterRequired, StandardTableDefinition tableDefinition) {
+      Boolean isPartitionFilterRequired, TableDefinition tableDef) {
 
     if (Strings.isNullOrEmpty(filter) && Strings.isNullOrEmpty(orderBy) && Strings.isNullOrEmpty(
         limit)
@@ -181,6 +182,13 @@ String generateQuery(String partitionFromDate, String partitionToDate, String fi
       return null;
     }
 
+    if (!(tableDef instanceof StandardTableDefinition)) {
+      throw new IllegalArgumentException(
+          String.format("Unsupported BigQuery table type for filtering/partitioning: %s. " +
+              "Cannot apply filters, limits, or ordering.", tableDef.getType()));
+    }
+
+    StandardTableDefinition tableDefinition = (StandardTableDefinition) tableDef;
     RangePartitioning rangePartitioning = tableDefinition.getRangePartitioning();
     TimePartitioning timePartitioning = tableDefinition.getTimePartitioning();
     StringBuilder condition = new StringBuilder();