| /* |
| * 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.cassandra.cql3.statements; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.regex.Pattern; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.cassandra.exceptions.SyntaxException; |
| |
| import static java.lang.String.format; |
| |
| public class PropertyDefinitions |
| { |
| private static final Pattern POSITIVE_PATTERN = Pattern.compile("(1|true|yes)"); |
| private static final Pattern NEGATIVE_PATTERN = Pattern.compile("(0|false|no)"); |
| |
| protected static final Logger logger = LoggerFactory.getLogger(PropertyDefinitions.class); |
| |
| protected final Map<String, Object> properties = new HashMap<>(); |
| |
| public void addProperty(String name, String value) throws SyntaxException |
| { |
| if (properties.put(name, value) != null) |
| throw new SyntaxException(format("Multiple definitions for property '%s'", name)); |
| } |
| |
| public void addProperty(String name, Map<String, String> value) throws SyntaxException |
| { |
| if (properties.put(name, value) != null) |
| throw new SyntaxException(format("Multiple definitions for property '%s'", name)); |
| } |
| |
| public void validate(Set<String> keywords, Set<String> obsolete) throws SyntaxException |
| { |
| for (String name : properties.keySet()) |
| { |
| if (keywords.contains(name)) |
| continue; |
| |
| if (obsolete.contains(name)) |
| logger.warn("Ignoring obsolete property {}", name); |
| else |
| throw new SyntaxException(format("Unknown property '%s'", name)); |
| } |
| } |
| |
| /** |
| * Returns the name of all the properties that are updated by this object. |
| */ |
| public Set<String> updatedProperties() |
| { |
| return properties.keySet(); |
| } |
| |
| public void removeProperty(String name) |
| { |
| properties.remove(name); |
| } |
| |
| public boolean hasProperty(String name) |
| { |
| return properties.containsKey(name); |
| } |
| |
| protected String getString(String name) throws SyntaxException |
| { |
| Object val = properties.get(name); |
| if (val == null) |
| return null; |
| if (!(val instanceof String)) |
| throw new SyntaxException(format("Invalid value for property '%s'. It should be a string", name)); |
| return (String)val; |
| } |
| |
| protected Map<String, String> getMap(String name) throws SyntaxException |
| { |
| Object val = properties.get(name); |
| if (val == null) |
| return null; |
| if (!(val instanceof Map)) |
| throw new SyntaxException(format("Invalid value for property '%s'. It should be a map.", name)); |
| return (Map<String, String>)val; |
| } |
| |
| public boolean getBoolean(String key, boolean defaultValue) throws SyntaxException |
| { |
| String value = getString(key); |
| return value != null ? parseBoolean(key, value) : defaultValue; |
| } |
| |
| public static boolean parseBoolean(String key, String value) throws SyntaxException |
| { |
| if (null == value) |
| throw new IllegalArgumentException("value argument can't be null"); |
| |
| String lowerCasedValue = value.toLowerCase(); |
| |
| if (POSITIVE_PATTERN.matcher(lowerCasedValue).matches()) |
| return true; |
| else if (NEGATIVE_PATTERN.matcher(lowerCasedValue).matches()) |
| return false; |
| |
| throw new SyntaxException(format("Invalid boolean value %s for '%s'. " + |
| "Positive values can be '1', 'true' or 'yes'. " + |
| "Negative values can be '0', 'false' or 'no'.", |
| value, key)); |
| } |
| |
| public int getInt(String key, int defaultValue) throws SyntaxException |
| { |
| String value = getString(key); |
| return value != null ? parseInt(key, value) : defaultValue; |
| } |
| |
| public static int parseInt(String key, String value) throws SyntaxException |
| { |
| if (null == value) |
| throw new IllegalArgumentException("value argument can't be null"); |
| |
| try |
| { |
| return Integer.parseInt(value); |
| } |
| catch (NumberFormatException e) |
| { |
| throw new SyntaxException(format("Invalid integer value %s for '%s'", value, key)); |
| } |
| } |
| |
| public double getDouble(String key, double defaultValue) throws SyntaxException |
| { |
| String value = getString(key); |
| return value != null ? parseDouble(key, value) : defaultValue; |
| } |
| |
| public static double parseDouble(String key, String value) throws SyntaxException |
| { |
| if (null == value) |
| throw new IllegalArgumentException("value argument can't be null"); |
| |
| try |
| { |
| return Double.parseDouble(value); |
| } |
| catch (NumberFormatException e) |
| { |
| throw new SyntaxException(format("Invalid double value %s for '%s'", value, key)); |
| } |
| } |
| } |