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Apache Commons DBCP software implements Database Connection Pooling
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/*
* 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.commons.dbcp2;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.sql.Connection;
import java.sql.SQLException;
import java.time.Duration;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.Properties;
import java.util.StringTokenizer;
import java.util.function.Consumer;
import java.util.function.Function;
import javax.naming.Context;
import javax.naming.Name;
import javax.naming.RefAddr;
import javax.naming.Reference;
import javax.naming.spi.ObjectFactory;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.pool2.impl.BaseObjectPoolConfig;
import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
/**
* JNDI object factory that creates an instance of {@code BasicDataSource} that has been configured based on the
* {@code RefAddr} values of the specified {@code Reference}, which must match the names and data types of the
* {@code BasicDataSource} bean properties with the following exceptions:
*
* - {@code connectionInitSqls} must be passed to this factory as a single String using semicolon to delimit the
* statements whereas {@code BasicDataSource} requires a collection of Strings.
*
*
* @since 2.0
*/
public class BasicDataSourceFactory implements ObjectFactory {
private static final Log log = LogFactory.getLog(BasicDataSourceFactory.class);
private static final String PROP_DEFAULT_AUTO_COMMIT = "defaultAutoCommit";
private static final String PROP_DEFAULT_READ_ONLY = "defaultReadOnly";
private static final String PROP_DEFAULT_TRANSACTION_ISOLATION = "defaultTransactionIsolation";
private static final String PROP_DEFAULT_CATALOG = "defaultCatalog";
private static final String PROP_DEFAULT_SCHEMA = "defaultSchema";
private static final String PROP_CACHE_STATE = "cacheState";
private static final String PROP_DRIVER_CLASS_NAME = "driverClassName";
private static final String PROP_LIFO = "lifo";
private static final String PROP_MAX_TOTAL = "maxTotal";
private static final String PROP_MAX_IDLE = "maxIdle";
private static final String PROP_MIN_IDLE = "minIdle";
private static final String PROP_INITIAL_SIZE = "initialSize";
private static final String PROP_MAX_WAIT_MILLIS = "maxWaitMillis";
private static final String PROP_TEST_ON_CREATE = "testOnCreate";
private static final String PROP_TEST_ON_BORROW = "testOnBorrow";
private static final String PROP_TEST_ON_RETURN = "testOnReturn";
private static final String PROP_TIME_BETWEEN_EVICTION_RUNS_MILLIS = "timeBetweenEvictionRunsMillis";
private static final String PROP_NUM_TESTS_PER_EVICTION_RUN = "numTestsPerEvictionRun";
private static final String PROP_MIN_EVICTABLE_IDLE_TIME_MILLIS = "minEvictableIdleTimeMillis";
private static final String PROP_SOFT_MIN_EVICTABLE_IDLE_TIME_MILLIS = "softMinEvictableIdleTimeMillis";
private static final String PROP_EVICTION_POLICY_CLASS_NAME = "evictionPolicyClassName";
private static final String PROP_TEST_WHILE_IDLE = "testWhileIdle";
private static final String PROP_PASSWORD = Constants.KEY_PASSWORD;
private static final String PROP_URL = "url";
private static final String PROP_USER_NAME = "username";
private static final String PROP_VALIDATION_QUERY = "validationQuery";
private static final String PROP_VALIDATION_QUERY_TIMEOUT = "validationQueryTimeout";
private static final String PROP_JMX_NAME = "jmxName";
private static final String PROP_REGISTER_CONNECTION_MBEAN = "registerConnectionMBean";
private static final String PROP_CONNECTION_FACTORY_CLASS_NAME = "connectionFactoryClassName";
/**
* The property name for connectionInitSqls. The associated value String must be of the form [query;]*
*/
private static final String PROP_CONNECTION_INIT_SQLS = "connectionInitSqls";
private static final String PROP_ACCESS_TO_UNDERLYING_CONNECTION_ALLOWED = "accessToUnderlyingConnectionAllowed";
private static final String PROP_REMOVE_ABANDONED_ON_BORROW = "removeAbandonedOnBorrow";
private static final String PROP_REMOVE_ABANDONED_ON_MAINTENANCE = "removeAbandonedOnMaintenance";
private static final String PROP_REMOVE_ABANDONED_TIMEOUT = "removeAbandonedTimeout";
private static final String PROP_LOG_ABANDONED = "logAbandoned";
private static final String PROP_ABANDONED_USAGE_TRACKING = "abandonedUsageTracking";
private static final String PROP_POOL_PREPARED_STATEMENTS = "poolPreparedStatements";
private static final String PROP_CLEAR_STATEMENT_POOL_ON_RETURN = "clearStatementPoolOnReturn";
private static final String PROP_MAX_OPEN_PREPARED_STATEMENTS = "maxOpenPreparedStatements";
private static final String PROP_CONNECTION_PROPERTIES = "connectionProperties";
private static final String PROP_MAX_CONN_LIFETIME_MILLIS = "maxConnLifetimeMillis";
private static final String PROP_LOG_EXPIRED_CONNECTIONS = "logExpiredConnections";
private static final String PROP_ROLLBACK_ON_RETURN = "rollbackOnReturn";
private static final String PROP_ENABLE_AUTO_COMMIT_ON_RETURN = "enableAutoCommitOnReturn";
private static final String PROP_DEFAULT_QUERY_TIMEOUT = "defaultQueryTimeout";
private static final String PROP_FAST_FAIL_VALIDATION = "fastFailValidation";
/**
* Value string must be of the form [STATE_CODE,]*
*/
private static final String PROP_DISCONNECTION_SQL_CODES = "disconnectionSqlCodes";
/*
* Block with obsolete properties from DBCP 1.x. Warn users that these are ignored and they should use the 2.x
* properties.
*/
private static final String NUPROP_MAX_ACTIVE = "maxActive";
private static final String NUPROP_REMOVE_ABANDONED = "removeAbandoned";
private static final String NUPROP_MAXWAIT = "maxWait";
/*
* Block with properties expected in a DataSource This props will not be listed as ignored - we know that they may
* appear in Resource, and not listing them as ignored.
*/
private static final String SILENT_PROP_FACTORY = "factory";
private static final String SILENT_PROP_SCOPE = "scope";
private static final String SILENT_PROP_SINGLETON = "singleton";
private static final String SILENT_PROP_AUTH = "auth";
private static final List ALL_PROPERTY_NAMES = Arrays.asList(PROP_DEFAULT_AUTO_COMMIT, PROP_DEFAULT_READ_ONLY,
PROP_DEFAULT_TRANSACTION_ISOLATION, PROP_DEFAULT_CATALOG, PROP_DEFAULT_SCHEMA, PROP_CACHE_STATE,
PROP_DRIVER_CLASS_NAME, PROP_LIFO, PROP_MAX_TOTAL, PROP_MAX_IDLE, PROP_MIN_IDLE, PROP_INITIAL_SIZE,
PROP_MAX_WAIT_MILLIS, PROP_TEST_ON_CREATE, PROP_TEST_ON_BORROW, PROP_TEST_ON_RETURN,
PROP_TIME_BETWEEN_EVICTION_RUNS_MILLIS, PROP_NUM_TESTS_PER_EVICTION_RUN, PROP_MIN_EVICTABLE_IDLE_TIME_MILLIS,
PROP_SOFT_MIN_EVICTABLE_IDLE_TIME_MILLIS, PROP_EVICTION_POLICY_CLASS_NAME, PROP_TEST_WHILE_IDLE, PROP_PASSWORD,
PROP_URL, PROP_USER_NAME, PROP_VALIDATION_QUERY, PROP_VALIDATION_QUERY_TIMEOUT, PROP_CONNECTION_INIT_SQLS,
PROP_ACCESS_TO_UNDERLYING_CONNECTION_ALLOWED, PROP_REMOVE_ABANDONED_ON_BORROW, PROP_REMOVE_ABANDONED_ON_MAINTENANCE,
PROP_REMOVE_ABANDONED_TIMEOUT, PROP_LOG_ABANDONED, PROP_ABANDONED_USAGE_TRACKING, PROP_POOL_PREPARED_STATEMENTS,
PROP_CLEAR_STATEMENT_POOL_ON_RETURN,
PROP_MAX_OPEN_PREPARED_STATEMENTS, PROP_CONNECTION_PROPERTIES, PROP_MAX_CONN_LIFETIME_MILLIS,
PROP_LOG_EXPIRED_CONNECTIONS, PROP_ROLLBACK_ON_RETURN, PROP_ENABLE_AUTO_COMMIT_ON_RETURN,
PROP_DEFAULT_QUERY_TIMEOUT, PROP_FAST_FAIL_VALIDATION, PROP_DISCONNECTION_SQL_CODES, PROP_JMX_NAME,
PROP_REGISTER_CONNECTION_MBEAN, PROP_CONNECTION_FACTORY_CLASS_NAME);
/**
* Obsolete properties from DBCP 1.x. with warning strings suggesting new properties. LinkedHashMap will guarantee
* that properties will be listed to output in order of insertion into map.
*/
private static final Map NUPROP_WARNTEXT = new LinkedHashMap<>();
static {
NUPROP_WARNTEXT.put(NUPROP_MAX_ACTIVE,
"Property " + NUPROP_MAX_ACTIVE + " is not used in DBCP2, use " + PROP_MAX_TOTAL + " instead. "
+ PROP_MAX_TOTAL + " default value is " + GenericObjectPoolConfig.DEFAULT_MAX_TOTAL + ".");
NUPROP_WARNTEXT.put(NUPROP_REMOVE_ABANDONED,
"Property " + NUPROP_REMOVE_ABANDONED + " is not used in DBCP2," + " use one or both of "
+ PROP_REMOVE_ABANDONED_ON_BORROW + " or " + PROP_REMOVE_ABANDONED_ON_MAINTENANCE + " instead. "
+ "Both have default value set to false.");
NUPROP_WARNTEXT.put(NUPROP_MAXWAIT,
"Property " + NUPROP_MAXWAIT + " is not used in DBCP2" + " , use " + PROP_MAX_WAIT_MILLIS + " instead. "
+ PROP_MAX_WAIT_MILLIS + " default value is " + BaseObjectPoolConfig.DEFAULT_MAX_WAIT
+ ".");
}
/**
* Silent Properties. These properties will not be listed as ignored - we know that they may appear in JDBC Resource
* references, and we will not list them as ignored.
*/
private static final List SILENT_PROPERTIES = new ArrayList<>();
static {
SILENT_PROPERTIES.add(SILENT_PROP_FACTORY);
SILENT_PROPERTIES.add(SILENT_PROP_SCOPE);
SILENT_PROPERTIES.add(SILENT_PROP_SINGLETON);
SILENT_PROPERTIES.add(SILENT_PROP_AUTH);
}
private static void accept(final Properties properties, final String name, final Function parser, final Consumer consumer) {
getOptional(properties, name).ifPresent(v -> consumer.accept(parser.apply(v)));
}
private static void acceptBoolean(final Properties properties, final String name, final Consumer consumer) {
accept(properties, name, Boolean::parseBoolean, consumer);
}
private static void acceptDurationOfMillis(final Properties properties, final String name, final Consumer consumer) {
accept(properties, name, s -> Duration.ofMillis(Long.parseLong(s)), consumer);
}
private static void acceptDurationOfSeconds(final Properties properties, final String name, final Consumer consumer) {
accept(properties, name, s -> Duration.ofSeconds(Long.parseLong(s)), consumer);
}
private static void acceptInt(final Properties properties, final String name, final Consumer consumer) {
accept(properties, name, Integer::parseInt, consumer);
}
private static void acceptString(final Properties properties, final String name, final Consumer consumer) {
accept(properties, name, Function.identity(), consumer);
}
/**
* Creates and configures a {@link BasicDataSource} instance based on the given properties.
*
* @param properties
* The data source configuration properties.
* @return A new a {@link BasicDataSource} instance based on the given properties.
* @throws SQLException
* Thrown when an error occurs creating the data source.
*/
public static BasicDataSource createDataSource(final Properties properties) throws SQLException {
final BasicDataSource dataSource = new BasicDataSource();
acceptBoolean(properties, PROP_DEFAULT_AUTO_COMMIT, dataSource::setDefaultAutoCommit);
acceptBoolean(properties, PROP_DEFAULT_READ_ONLY, dataSource::setDefaultReadOnly);
getOptional(properties, PROP_DEFAULT_TRANSACTION_ISOLATION).ifPresent(value -> {
value = value.toUpperCase(Locale.ROOT);
int level = PoolableConnectionFactory.UNKNOWN_TRANSACTION_ISOLATION;
if ("NONE".equals(value)) {
level = Connection.TRANSACTION_NONE;
} else if ("READ_COMMITTED".equals(value)) {
level = Connection.TRANSACTION_READ_COMMITTED;
} else if ("READ_UNCOMMITTED".equals(value)) {
level = Connection.TRANSACTION_READ_UNCOMMITTED;
} else if ("REPEATABLE_READ".equals(value)) {
level = Connection.TRANSACTION_REPEATABLE_READ;
} else if ("SERIALIZABLE".equals(value)) {
level = Connection.TRANSACTION_SERIALIZABLE;
} else {
try {
level = Integer.parseInt(value);
} catch (final NumberFormatException e) {
System.err.println("Could not parse defaultTransactionIsolation: " + value);
System.err.println("WARNING: defaultTransactionIsolation not set");
System.err.println("using default value of database driver");
level = PoolableConnectionFactory.UNKNOWN_TRANSACTION_ISOLATION;
}
}
dataSource.setDefaultTransactionIsolation(level);
});
acceptString(properties, PROP_DEFAULT_SCHEMA, dataSource::setDefaultSchema);
acceptString(properties, PROP_DEFAULT_CATALOG, dataSource::setDefaultCatalog);
acceptBoolean(properties, PROP_CACHE_STATE, dataSource::setCacheState);
acceptString(properties, PROP_DRIVER_CLASS_NAME, dataSource::setDriverClassName);
acceptBoolean(properties, PROP_LIFO, dataSource::setLifo);
acceptInt(properties, PROP_MAX_TOTAL, dataSource::setMaxTotal);
acceptInt(properties, PROP_MAX_IDLE, dataSource::setMaxIdle);
acceptInt(properties, PROP_MIN_IDLE, dataSource::setMinIdle);
acceptInt(properties, PROP_INITIAL_SIZE, dataSource::setInitialSize);
acceptDurationOfMillis(properties, PROP_MAX_WAIT_MILLIS, dataSource::setMaxWait);
acceptBoolean(properties, PROP_TEST_ON_CREATE, dataSource::setTestOnCreate);
acceptBoolean(properties, PROP_TEST_ON_BORROW, dataSource::setTestOnBorrow);
acceptBoolean(properties, PROP_TEST_ON_RETURN, dataSource::setTestOnReturn);
acceptDurationOfMillis(properties, PROP_TIME_BETWEEN_EVICTION_RUNS_MILLIS, dataSource::setDurationBetweenEvictionRuns);
acceptInt(properties, PROP_NUM_TESTS_PER_EVICTION_RUN, dataSource::setNumTestsPerEvictionRun);
acceptDurationOfMillis(properties, PROP_MIN_EVICTABLE_IDLE_TIME_MILLIS, dataSource::setMinEvictableIdle);
acceptDurationOfMillis(properties, PROP_SOFT_MIN_EVICTABLE_IDLE_TIME_MILLIS, dataSource::setSoftMinEvictableIdle);
acceptString(properties, PROP_EVICTION_POLICY_CLASS_NAME, dataSource::setEvictionPolicyClassName);
acceptBoolean(properties, PROP_TEST_WHILE_IDLE, dataSource::setTestWhileIdle);
acceptString(properties, PROP_PASSWORD, dataSource::setPassword);
acceptString(properties, PROP_URL, dataSource::setUrl);
acceptString(properties, PROP_USER_NAME, dataSource::setUsername);
acceptString(properties, PROP_VALIDATION_QUERY, dataSource::setValidationQuery);
acceptDurationOfSeconds(properties, PROP_VALIDATION_QUERY_TIMEOUT, dataSource::setValidationQueryTimeout);
acceptBoolean(properties, PROP_ACCESS_TO_UNDERLYING_CONNECTION_ALLOWED, dataSource::setAccessToUnderlyingConnectionAllowed);
acceptBoolean(properties, PROP_REMOVE_ABANDONED_ON_BORROW, dataSource::setRemoveAbandonedOnBorrow);
acceptBoolean(properties, PROP_REMOVE_ABANDONED_ON_MAINTENANCE, dataSource::setRemoveAbandonedOnMaintenance);
acceptDurationOfSeconds(properties, PROP_REMOVE_ABANDONED_TIMEOUT, dataSource::setRemoveAbandonedTimeout);
acceptBoolean(properties, PROP_LOG_ABANDONED, dataSource::setLogAbandoned);
acceptBoolean(properties, PROP_ABANDONED_USAGE_TRACKING, dataSource::setAbandonedUsageTracking);
acceptBoolean(properties, PROP_POOL_PREPARED_STATEMENTS, dataSource::setPoolPreparedStatements);
acceptBoolean(properties, PROP_CLEAR_STATEMENT_POOL_ON_RETURN, dataSource::setClearStatementPoolOnReturn);
acceptInt(properties, PROP_MAX_OPEN_PREPARED_STATEMENTS, dataSource::setMaxOpenPreparedStatements);
getOptional(properties, PROP_CONNECTION_INIT_SQLS).ifPresent(v -> dataSource.setConnectionInitSqls(parseList(v, ';')));
final String value = properties.getProperty(PROP_CONNECTION_PROPERTIES);
if (value != null) {
for (final Object key : getProperties(value).keySet()) {
final String propertyName = Objects.toString(key, null);
dataSource.addConnectionProperty(propertyName, getProperties(value).getProperty(propertyName));
}
}
acceptDurationOfMillis(properties, PROP_MAX_CONN_LIFETIME_MILLIS, dataSource::setMaxConn);
acceptBoolean(properties, PROP_LOG_EXPIRED_CONNECTIONS, dataSource::setLogExpiredConnections);
acceptString(properties, PROP_JMX_NAME, dataSource::setJmxName);
acceptBoolean(properties, PROP_REGISTER_CONNECTION_MBEAN, dataSource::setRegisterConnectionMBean);
acceptBoolean(properties, PROP_ENABLE_AUTO_COMMIT_ON_RETURN, dataSource::setAutoCommitOnReturn);
acceptBoolean(properties, PROP_ROLLBACK_ON_RETURN, dataSource::setRollbackOnReturn);
acceptDurationOfSeconds(properties, PROP_DEFAULT_QUERY_TIMEOUT, dataSource::setDefaultQueryTimeout);
acceptBoolean(properties, PROP_FAST_FAIL_VALIDATION, dataSource::setFastFailValidation);
getOptional(properties, PROP_DISCONNECTION_SQL_CODES).ifPresent(v -> dataSource.setDisconnectionSqlCodes(parseList(v, ',')));
acceptString(properties, PROP_CONNECTION_FACTORY_CLASS_NAME, dataSource::setConnectionFactoryClassName);
// DBCP-215
// Trick to make sure that initialSize connections are created
if (dataSource.getInitialSize() > 0) {
dataSource.getLogWriter();
}
// Return the configured DataSource instance
return dataSource;
}
private static Optional getOptional(final Properties properties, final String name) {
return Optional.ofNullable(properties.getProperty(name));
}
/**
* Parse properties from the string. Format of the string must be [propertyName=property;]*
*
* @param propText The source text
* @return Properties A new Properties instance
* @throws SQLException When a paring exception occurs
*/
private static Properties getProperties(final String propText) throws SQLException {
final Properties p = new Properties();
if (propText != null) {
try {
p.load(new ByteArrayInputStream(propText.replace(';', '\n').getBytes(StandardCharsets.ISO_8859_1)));
} catch (IOException e) {
throw new SQLException(propText, e);
}
}
return p;
}
/**
* Parse list of property values from a delimited string
*
* @param value
* delimited list of values
* @param delimiter
* character used to separate values in the list
* @return String Collection of values
*/
private static Collection parseList(final String value, final char delimiter) {
final StringTokenizer tokenizer = new StringTokenizer(value, Character.toString(delimiter));
final Collection tokens = new ArrayList<>(tokenizer.countTokens());
while (tokenizer.hasMoreTokens()) {
tokens.add(tokenizer.nextToken());
}
return tokens;
}
/**
* Creates and return a new {@code BasicDataSource} instance. If no instance can be created, return
* {@code null} instead.
*
* @param obj
* The possibly null object containing location or reference information that can be used in creating an
* object
* @param name
* The name of this object relative to {@code nameCtx}
* @param nameCtx
* The context relative to which the {@code name} parameter is specified, or {@code null} if
* {@code name} is relative to the default initial context
* @param environment
* The possibly null environment that is used in creating this object
*
* @throws SQLException
* if an exception occurs creating the instance
*/
@Override
public Object getObjectInstance(final Object obj, final Name name, final Context nameCtx,
final Hashtable environment) throws SQLException {
// We only know how to deal with {@code javax.naming.Reference}s
// that specify a class name of "javax.sql.DataSource"
if (obj == null || !(obj instanceof Reference)) {
return null;
}
final Reference ref = (Reference) obj;
if (!"javax.sql.DataSource".equals(ref.getClassName())) {
return null;
}
// Check property names and log warnings about obsolete and / or unknown properties
final List warnMessages = new ArrayList<>();
final List infoMessages = new ArrayList<>();
validatePropertyNames(ref, name, warnMessages, infoMessages);
warnMessages.forEach(log::warn);
infoMessages.forEach(log::info);
final Properties properties = new Properties();
ALL_PROPERTY_NAMES.forEach(propertyName -> {
final RefAddr ra = ref.get(propertyName);
if (ra != null) {
properties.setProperty(propertyName, Objects.toString(ra.getContent(), null));
}
});
return createDataSource(properties);
}
/**
* Collects warnings and info messages. Warnings are generated when an obsolete property is set. Unknown properties
* generate info messages.
*
* @param ref
* Reference to check properties of
* @param name
* Name provided to getObject
* @param warnMessages
* container for warning messages
* @param infoMessages
* container for info messages
*/
private void validatePropertyNames(final Reference ref, final Name name, final List warnMessages,
final List infoMessages) {
final String nameString = name != null ? "Name = " + name.toString() + " " : "";
NUPROP_WARNTEXT.forEach((propertyName, value) -> {
final RefAddr ra = ref.get(propertyName);
if (ra != null && !ALL_PROPERTY_NAMES.contains(ra.getType())) {
final StringBuilder stringBuilder = new StringBuilder(nameString);
final String propertyValue = Objects.toString(ra.getContent(), null);
stringBuilder.append(value).append(" You have set value of \"").append(propertyValue).append("\" for \"").append(propertyName)
.append("\" property, which is being ignored.");
warnMessages.add(stringBuilder.toString());
}
});
final Enumeration allRefAddrs = ref.getAll();
while (allRefAddrs.hasMoreElements()) {
final RefAddr ra = allRefAddrs.nextElement();
final String propertyName = ra.getType();
// If property name is not in the properties list, we haven't warned on it
// and it is not in the "silent" list, tell user we are ignoring it.
if (!(ALL_PROPERTY_NAMES.contains(propertyName) || NUPROP_WARNTEXT.containsKey(propertyName) || SILENT_PROPERTIES.contains(propertyName))) {
final String propertyValue = Objects.toString(ra.getContent(), null);
final StringBuilder stringBuilder = new StringBuilder(nameString);
stringBuilder.append("Ignoring unknown property: ").append("value of \"").append(propertyValue).append("\" for \"").append(propertyName)
.append("\" property");
infoMessages.add(stringBuilder.toString());
}
}
}
}