Conditions with many OR operations could throw an UnsupportedOperationException.

h2/src/main/org/h2/expression/Comparison.java

@@ -14,6 +14,7 @@ import org.h2.index.IndexCondition;
 import org.h2.message.DbException;
 import org.h2.table.ColumnResolver;
 import org.h2.table.TableFilter;
+import org.h2.util.New;
 import org.h2.value.Value;
 import org.h2.value.ValueBoolean;
 import org.h2.value.ValueNull;
@@ -451,13 +452,13 @@ public class Comparison extends Condition {
                 // a=b OR a=c
                 Database db = session.getDatabase();
                 if (rc && r2c && l.equals(l2)) {
-                    return new ConditionIn(db, left, Arrays.asList(right, other.right));
+                    return new ConditionIn(db, left, New.arrayList(Arrays.asList(right, other.right)));
                 } else if (rc && l2c && l.equals(r2)) {
-                    return new ConditionIn(db, left, Arrays.asList(right, other.left));
+                    return new ConditionIn(db, left, New.arrayList(Arrays.asList(right, other.left)));
                 } else if (lc && r2c && r.equals(l2)) {
-                    return new ConditionIn(db, right, Arrays.asList(left, other.right));
+                    return new ConditionIn(db, right, New.arrayList(Arrays.asList(left, other.right)));
                 } else if (lc && l2c && r.equals(r2)) {
-                    return new ConditionIn(db, right, Arrays.asList(left, other.left));
+                    return new ConditionIn(db, right, New.arrayList(Arrays.asList(left, other.left)));
                 }
             }
         }

h2/src/main/org/h2/expression/ConditionIn.java

@@ -6,7 +6,7 @@
  */
 package org.h2.expression;
 
-import java.util.List;
+import java.util.ArrayList;
 import org.h2.constant.SysProperties;
 import org.h2.engine.Database;
 import org.h2.engine.Session;
@@ -25,7 +25,7 @@ public class ConditionIn extends Condition {
 
     private final Database database;
     private Expression left;
-    private final List<Expression> valueList;
+    private final ArrayList<Expression> valueList;
     private int queryLevel;
 
     /**
@@ -35,7 +35,7 @@ public class ConditionIn extends Condition {
      * @param left the expression before IN
      * @param values the value list (at least one element)
      */
-    public ConditionIn(Database database, Expression left, List<Expression> values) {
+    public ConditionIn(Database database, Expression left, ArrayList<Expression> values) {
         this.database = database;
         this.left = left;
         this.valueList = values;