/*
* 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.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.cassandra.exceptions.SyntaxException;
public class PropertyDefinitions
{
protected static final Logger logger = LoggerFactory.getLogger(PropertyDefinitions.class);
protected final Map<String, Object> properties = new HashMap<String, Object>();
public void addProperty(String name, String value) throws SyntaxException
{
if (properties.put(name, value) != null)
throw new SyntaxException(String.format("Multiple definition for property '%s'", name));
}
public void addProperty(String name, Map<String, String> value) throws SyntaxException
{
if (properties.put(name, value) != null)
throw new SyntaxException(String.format("Multiple definition 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(String.format("Unknown property '%s'", name));
}
}
protected String getSimple(String name) throws SyntaxException
{
Object val = properties.get(name);
if (val == null)
return null;
if (!(val instanceof String))
throw new SyntaxException(String.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(String.format("Invalid value for property '%s'. It should be a map.", name));
return (Map<String, String>)val;
}
public Boolean hasProperty(String name)
{
return properties.containsKey(name);
}
public String getString(String key, String defaultValue) throws SyntaxException
{
String value = getSimple(key);
return value != null ? value : defaultValue;
}
// Return a property value, typed as a Boolean
public Boolean getBoolean(String key, Boolean defaultValue) throws SyntaxException
{
String value = getSimple(key);
return (value == null) ? defaultValue : value.toLowerCase().matches("(1|true|yes)");
}
// Return a property value, typed as a double
public double getDouble(String key, double defaultValue) throws SyntaxException
{
String value = getSimple(key);
if (value == null)
{
return defaultValue;
}
else
{
try
{
return Double.valueOf(value);
}
catch (NumberFormatException e)
{
throw new SyntaxException(String.format("Invalid double value %s for '%s'", value, key));
}
}
}
// Return a property value, typed as an Integer
public Integer getInt(String key, Integer defaultValue) throws SyntaxException
{
String value = getSimple(key);
return toInt(key, value, defaultValue);
}
public static Integer toInt(String key, String value, Integer defaultValue) throws SyntaxException
{
if (value == null)
{
return defaultValue;
}
else
{
try
{
return Integer.valueOf(value);
}
catch (NumberFormatException e)
{
throw new SyntaxException(String.format("Invalid integer value %s for '%s'", value, key));
}
}
}
}