| /* |
| * 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 SF 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.sling.hc.util; |
| |
| import org.apache.sling.hc.api.Result; |
| import org.apache.sling.hc.api.ResultLog; |
| |
| /** Simple check of numeric values against expressions |
| * like < N, > N, between two values etc. |
| * See the SimpleConstraintCheckerTest for examples. |
| */ |
| @Deprecated |
| public class SimpleConstraintChecker { |
| |
| public static final String CONTAINS = "contains"; |
| |
| /** Check value against expression and report to result */ |
| public void check(Object inputValue, String constraint, ResultLog resultLog) { |
| |
| final String stringValue = inputValue == null ? "" : inputValue.toString(); |
| |
| if(constraint == null || constraint.trim().length() == 0) { |
| throw new IllegalArgumentException("Empty constraint, cannot evaluate"); |
| } |
| |
| final String [] parts = constraint.split(" "); |
| boolean matches = false; |
| try { |
| if(constraint.startsWith(">") && parts.length == 2) { |
| final int value = Integer.valueOf(stringValue).intValue(); |
| matches = value > Integer.valueOf(parts[1]); |
| |
| } else if(constraint.startsWith("<") && parts.length == 2) { |
| final int value = Integer.valueOf(stringValue).intValue(); |
| matches = value < Integer.valueOf(parts[1]); |
| |
| } else if(parts.length == 4 && "between".equalsIgnoreCase(parts[0]) && "and".equalsIgnoreCase(parts[2]) ) { |
| final int value = Integer.valueOf(stringValue).intValue(); |
| final int lowerBound = Integer.valueOf(parts[1]); |
| final int upperBound = Integer.valueOf(parts[3]); |
| matches = value > lowerBound && value < upperBound; |
| |
| } else if(parts.length >1 && CONTAINS.equalsIgnoreCase(parts[0])) { |
| final String pattern = constraint.substring(CONTAINS.length()).trim(); |
| matches = stringValue.contains(pattern); |
| |
| } else { |
| matches = constraint.equals(stringValue); |
| } |
| } catch(NumberFormatException nfe) { |
| resultLog.add(new ResultLog.Entry( |
| Result.Status.WARN, |
| "Invalid numeric value [" + inputValue + "] while evaluating " + constraint)); |
| } |
| |
| if(matches) { |
| resultLog.add(new ResultLog.Entry( |
| Result.Status.DEBUG, |
| "Value [" + inputValue + "] matches constraint [" + constraint + "]")); |
| } else { |
| resultLog.add(new ResultLog.Entry( |
| Result.Status.WARN, |
| "Value [" + inputValue + "] does not match constraint [" + constraint + "]")); |
| } |
| } |
| } |