FINERACT-2316: Localize interest rate chart slab validation

- Add localized validation messages for overlap and gap errors in interest rate chart slabs
- Use DataValidatorBuilder with resource/parameter context for clean error codes
- Add unit tests for validation error codes and arguments
- Add German translations for validation messages

fineract-provider/src/main/resources/messages.properties

@@ -0,0 +1,22 @@
+#
+# 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.
+#
+
+# Interest Rate Chart validation messages
+validation.msg.savings.interestRateChart.slabs.overlap=There is an overlap between slabs {0} and {1}.
+validation.msg.savings.interestRateChart.slabs.gap=There is a gap between slabs {0} and {1}.

fineract-provider/src/main/resources/messages_de.properties

@@ -0,0 +1,22 @@
+#
+# 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.
+#
+
+# Interest Rate Chart validation messages
+validation.msg.savings.interestRateChart.slabs.overlap=Es gibt eine Überlappung zwischen Segmenten {0} und {1}.
+validation.msg.savings.interestRateChart.slabs.gap=Es gibt eine Lücke zwischen Segmenten {0} und {1}.

fineract-savings/src/main/java/org/apache/fineract/portfolio/interestratechart/domain/InterestRateChart.java

@@ -137,17 +137,21 @@ public class InterestRateChart extends AbstractPersistableCustom<Long> {
                 if (iSlabs.slabFields().isValidChart(isPrimaryGroupingByAmount)
                         && nextSlabs.slabFields().isValidChart(isPrimaryGroupingByAmount)) {
                     if (iSlabs.slabFields().isRateChartOverlapping(nextSlabs.slabFields(), isPrimaryGroupingByAmount)) {
-                        baseDataValidator.failWithCodeNoParameterAddedToErrorCode("chart.slabs.range.overlapping",
+                        // Use DataValidatorBuilder with resource/parameter context for clean error codes
-                                iSlabs.slabFields().fromPeriod(), iSlabs.slabFields().toPeriod(), nextSlabs.slabFields().fromPeriod(),
+                        DataValidatorBuilder v = new DataValidatorBuilder(baseDataValidator.getDataValidationErrors())
-                                nextSlabs.slabFields().toPeriod(), iSlabs.slabFields().getAmountRangeFrom(),
+                                .resource("savings.interestRateChart").parameter("slabs");
-                                iSlabs.slabFields().getAmountRangeTo(), nextSlabs.slabFields().getAmountRangeFrom(),
+                        v.failWithCode("overlap", iSlabs.slabFields().fromPeriod(), iSlabs.slabFields().toPeriod(),
-                                nextSlabs.slabFields().getAmountRangeTo());
+                                nextSlabs.slabFields().fromPeriod(), nextSlabs.slabFields().toPeriod(),
+                                iSlabs.slabFields().getAmountRangeFrom(), iSlabs.slabFields().getAmountRangeTo(),
+                                nextSlabs.slabFields().getAmountRangeFrom(), nextSlabs.slabFields().getAmountRangeTo());
                     } else if (iSlabs.slabFields().isRateChartHasGap(nextSlabs.slabFields(), isPrimaryGroupingByAmount)) {
-                        baseDataValidator.failWithCodeNoParameterAddedToErrorCode("chart.slabs.range.has.gap",
+                        // Use DataValidatorBuilder with resource/parameter context for clean error codes
-                                iSlabs.slabFields().fromPeriod(), iSlabs.slabFields().toPeriod(), nextSlabs.slabFields().fromPeriod(),
+                        DataValidatorBuilder v = new DataValidatorBuilder(baseDataValidator.getDataValidationErrors())
-                                nextSlabs.slabFields().toPeriod(), iSlabs.slabFields().getAmountRangeFrom(),
+                                .resource("savings.interestRateChart").parameter("slabs");
-                                iSlabs.slabFields().getAmountRangeTo(), nextSlabs.slabFields().getAmountRangeFrom(),
+                        v.failWithCode("gap", iSlabs.slabFields().fromPeriod(), iSlabs.slabFields().toPeriod(),
-                                nextSlabs.slabFields().getAmountRangeTo());
+                                nextSlabs.slabFields().fromPeriod(), nextSlabs.slabFields().toPeriod(),
+                                iSlabs.slabFields().getAmountRangeFrom(), iSlabs.slabFields().getAmountRangeTo(),
+                                nextSlabs.slabFields().getAmountRangeFrom(), nextSlabs.slabFields().getAmountRangeTo());
                     }
                     if (isPrimaryGroupingByAmount) {
                         if (!iSlabs.slabFields().isAmountSame(nextSlabs.slabFields())) {

fineract-savings/src/test/java/org/apache/fineract/portfolio/interestratechart/domain/InterestRateChartValidationTest.java

@@ -0,0 +1,74 @@
+/**
+ * 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.fineract.portfolio.interestratechart.domain;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+
+import java.util.ArrayList;
+import java.util.List;
+import org.apache.fineract.infrastructure.core.data.ApiParameterError;
+import org.apache.fineract.infrastructure.core.data.DataValidatorBuilder;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Test class for InterestRateChart validation error codes and arguments
+ */
+public class InterestRateChartValidationTest {
+
+    private List<ApiParameterError> dataValidationErrors;
+
+    @BeforeEach
+    public void setUp() {
+        dataValidationErrors = new ArrayList<>();
+    }
+
+    @Test
+    public void testOverlappingRangesValidation() {
+        // Given - use DataValidatorBuilder with resource/parameter context
+        DataValidatorBuilder v = new DataValidatorBuilder(dataValidationErrors).resource("savings.interestRateChart").parameter("slabs");
+
+        // When - simulate overlapping ranges validation
+        v.failWithCode("overlap", 1, 12, 6, 18, 1000.0, 5000.0, 3000.0, 8000.0);
+
+        // Then
+        assertEquals(1, dataValidationErrors.size(), "Expected exactly one validation error");
+        ApiParameterError actualError = dataValidationErrors.get(0);
+        assertEquals("validation.msg.savings.interestRateChart.slabs.overlap", actualError.getUserMessageGlobalisationCode());
+        // Check that arguments are present
+        assertFalse(actualError.getArgs().isEmpty());
+    }
+
+    @Test
+    public void testGapBetweenRangesValidation() {
+        // Given - use DataValidatorBuilder with resource/parameter context
+        DataValidatorBuilder v = new DataValidatorBuilder(dataValidationErrors).resource("savings.interestRateChart").parameter("slabs");
+
+        // When - simulate gap between ranges validation
+        v.failWithCode("gap", 1, 12, 15, 24, 1000.0, 5000.0, 6000.0, 10000.0);
+
+        // Then
+        assertEquals(1, dataValidationErrors.size(), "Expected exactly one validation error");
+        ApiParameterError actualError = dataValidationErrors.get(0);
+        assertEquals("validation.msg.savings.interestRateChart.slabs.gap", actualError.getUserMessageGlobalisationCode());
+        // Check that arguments are present
+        assertFalse(actualError.getArgs().isEmpty());
+    }
+}