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+/**
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+ * Licensed to the Apache Software Foundation (ASF) under one
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+ * or more contributor license agreements. See the NOTICE file
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+ * distributed with this work for additional information
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+ * regarding copyright ownership. The ASF licenses this file
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+ * to you under the Apache License, Version 2.0 (the
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+ * "License"); you may not use this file except in compliance
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+ * with the License. You may obtain a copy of the License at
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+ *
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+ * http://www.apache.org/licenses/LICENSE-2.0
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+ *
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+ * Unless required by applicable law or agreed to in writing, software
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+ * distributed under the License is distributed on an "AS IS" BASIS,
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+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+ * See the License for the specific language governing permissions and
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+ * limitations under the License.
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+ */
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+package org.apache.ambari.view.property;
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+
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+import org.apache.ambari.view.ViewContext;
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+import org.apache.ambari.view.ViewInstanceDefinition;
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+import org.apache.ambari.view.validation.Validator;
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+import org.apache.ambari.view.validation.ValidationResult;
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+
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+import java.util.Map;
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+import java.net.URL;
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+import java.net.MalformedURLException;
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+import java.net.URISyntaxException;
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+
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+/**
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+ * The validator class for the PropertyValidator view.
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+ *
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+ */
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+public class MyValidator implements Validator {
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+
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+ private static final String PARAMETER_NAME_FREEFORM = "freeform";
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+ private static final String PARAMETER_NAME_INTEGER = "integer";
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+ private static final String PARAMETER_NAME_FIRST_VALUE = "first.value";
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+ private static final String PARAMETER_NAME_SECOND_VALUE = "second.value";
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+ private static final String PARAMETER_NAME_URL = "url";
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+
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+ private static final int SECOND_VALUE_MAX = 100;
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+
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+ @Override
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+ public ValidationResult validateInstance(ViewInstanceDefinition definition, ValidationContext mode) {
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+ // get the instance props
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+ Map<String,String> props = definition.getPropertyMap();
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+
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+ // do a check to confirm first is less than or equals to second
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+ return validateParameterFirstSecondValues(props);
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+ }
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+
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+ @Override
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+ public ValidationResult validateProperty(String property, ViewInstanceDefinition definition, ValidationContext mode) {
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+ if (property.equals(PARAMETER_NAME_FREEFORM)) {
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+ // do nothing, this property can be free form
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+ } else if (property.equals(PARAMETER_NAME_URL)) {
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+ return validateParameterURL(definition.getPropertyMap());
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+ } else if (property.equals(PARAMETER_NAME_INTEGER)) {
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+ return validateParameterInteger(definition.getPropertyMap());
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+ } else if (property.equals(PARAMETER_NAME_FIRST_VALUE)) {
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+ return validateParameterFirst(definition.getPropertyMap());
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+ } else if (property.equals(PARAMETER_NAME_SECOND_VALUE)) {
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+ return validateParameterSecond(definition.getPropertyMap());
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+ }
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+
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+ return ValidationResult.SUCCESS;
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+ }
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+
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+ /**
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+ * Validates the parameter URL.
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+ *
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+ * @param properties the view instance parameters
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+ * @return the validation result
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+ */
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+ private ValidationResult validateParameterURL(Map<String,String> properties) {
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+ String urlProp = properties.get(PARAMETER_NAME_URL);
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+
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+ URL u = null;
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+ try {
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+ u = new URL(urlProp);
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+ } catch (MalformedURLException e) {
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+ return new MyValidationResult(false, "Must be valid URL");
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+ }
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+
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+ try {
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+ u.toURI();
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+ } catch (URISyntaxException e) {
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+ return new MyValidationResult(false, "Must be valid URL");
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+ }
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+
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+ return ValidationResult.SUCCESS;
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+ }
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+
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+ /**
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+ * Validates the parameter Integer.
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+ *
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+ * @param properties the view instance parameters
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+ * @return the validation result
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+ */
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+ private ValidationResult validateParameterInteger(Map<String,String> properties) {
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+ String val = properties.get(PARAMETER_NAME_INTEGER);
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+ int intValue = -1;
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+ try {
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+ checkInteger(val);
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+ } catch (NumberFormatException nfe) {
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+ return new MyValidationResult(false, "Must be an integer");
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+ }
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+ return ValidationResult.SUCCESS;
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+ }
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+
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+ /**
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+ * Validates the parameter first value.
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+ *
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+ * @param properties the view instance parameters
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+ * @return the validation result
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+ */
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+ private ValidationResult validateParameterFirst(Map<String,String> properties) {
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+ String val = properties.get(PARAMETER_NAME_FIRST_VALUE);
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+ int intValue = -1;
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+ try {
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+ checkInteger(val);
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+ } catch (NumberFormatException nfe) {
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+ return new MyValidationResult(false, "Must be an integer");
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+ }
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+ return ValidationResult.SUCCESS;
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+ }
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+
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+ /**
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+ * Validates the parameter second value.
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+ *
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+ * @param properties the view instance parameters
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+ * @return the validation result
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+ */
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+ private ValidationResult validateParameterSecond(Map<String,String> properties) {
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+ String val = properties.get(PARAMETER_NAME_SECOND_VALUE);
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+ int intValue = -1;
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+ try {
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+ intValue = checkInteger(val);
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+ } catch (NumberFormatException nfe) {
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+ return new MyValidationResult(false, "Must be an integer");
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+ }
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+
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+ if (intValue > SECOND_VALUE_MAX)
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+ return new MyValidationResult(false, "Must be less than "+SECOND_VALUE_MAX);
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+
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+ return ValidationResult.SUCCESS;
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+ }
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+
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+ /**
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+ * Validates the parameter First and Second values.
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+ *
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+ * @param properties the view instance parameters
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+ * @return the validation result
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+ */
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+ private ValidationResult validateParameterFirstSecondValues(Map<String,String> properties) {
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+ // check that first is an int
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+ String firstValue = properties.get(PARAMETER_NAME_FIRST_VALUE);
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+ int firstIntValue = -1;
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+ try {
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+ firstIntValue = checkInteger(firstValue);
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+ } catch (NumberFormatException nfe) {
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+ return new MyValidationResult(false, "Must be an integer");
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+ }
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+
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+ // check that second is an int
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+ String secondValue = properties.get(PARAMETER_NAME_SECOND_VALUE);
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+ int secondIntValue = -1;
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+ try {
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+ secondIntValue = checkInteger(secondValue);
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+ } catch (NumberFormatException nfe) {
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+ return new MyValidationResult(false, "Must be an integer");
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+ }
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+
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+ // check that second >= first
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+ if (secondIntValue < firstIntValue)
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+ return new MyValidationResult(false, "Second value must be greater or equal to first");
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+
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+ return ValidationResult.SUCCESS;
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+ }
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+
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+ /**
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+ * Check integer.
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+ *
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+ * @param value the value
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+ * @return the resulting integer
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+ * @throws NumberFormatException if the value is not a valid integer
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+ */
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+ private static int checkInteger(String value) {
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+ return Integer.parseInt(value);
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+ }
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+
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+ /**
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+ * Represents a validation result for this validator.
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+ *
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+ */
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+ private static class MyValidationResult implements ValidationResult {
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+
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+ private boolean valid;
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+ private String details;
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+
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+ /**
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+ * Constructor.
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+ *
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+ * @param valid if <code>true</code>, result is valid
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+ * @param details the details of the result
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+ *
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+ */
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+ public MyValidationResult(boolean valid, String details) {
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+ this.valid = valid;
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+ this.details = details;
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+ }
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+
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+ @Override
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+ public boolean isValid() {
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+ return this.valid;
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+ }
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+
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+ @Override
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+ public String getDetail() {
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+ return this.details;
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+ }
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+
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+ } // end inner MyValidationResult class
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+
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+} // end MyValidator class
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sposetti