本文整理了Java中java.util.Properties.putIfAbsent()方法的一些代码示例，展示了Properties.putIfAbsent()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Properties.putIfAbsent()方法的具体详情如下：
包路径：java.util.Properties
类名称：Properties
方法名：putIfAbsent

Properties.putIfAbsent介绍

暂无

代码示例

代码示例来源：origin: apache/geode

public T withName(String name) {
 // only if name is not defined yet
 if (!properties.containsKey(NAME)) {
  this.name = name;
  properties.putIfAbsent(NAME, name);
 }
 return (T) this;
}

代码示例来源：origin: apache/geode

/**
 * be able to start JMX manager and admin rest on default ports
 */
public T withJMXManager(boolean useProductDefaultPorts) {
 if (!useProductDefaultPorts) {
  // do no override these properties if already exists
  properties.putIfAbsent(JMX_MANAGER_PORT,
    portSupplier.getAvailablePort() + "");
  this.jmxPort = Integer.parseInt(properties.getProperty(JMX_MANAGER_PORT));
 } else {
  // the real port numbers will be set after we started the server/locator.
  this.jmxPort = 0;
 }
 properties.putIfAbsent(JMX_MANAGER, "true");
 properties.putIfAbsent(JMX_MANAGER_START, "true");
 return (T) this;
}

代码示例来源：origin: apache/hive

@Override
public synchronized Object putIfAbsent(Object key, Object value) {
 if (interned != null) copyFromInternedToThis();
 return super.putIfAbsent(key, value);
}

代码示例来源：origin: kiegroup/jbpm

private LdapContext buildLdapContext() throws NamingException {
  config.putIfAbsent(Context.INITIAL_CONTEXT_FACTORY, DEFAULT_INITIAL_CONTEXT_FACTORY);
  config.putIfAbsent(Context.SECURITY_AUTHENTICATION, DEFAULT_SECURITY_AUTHENTICATION);
  String protocol = config.getProperty(Context.SECURITY_PROTOCOL);
  config.putIfAbsent(Context.PROVIDER_URL, createDefaultProviderUrl(protocol));
  if (log.isDebugEnabled()) {
    log.debug("Using following InitialLdapContext properties:");
    log.debug("Initial Context Factory: {}", config.getProperty(Context.INITIAL_CONTEXT_FACTORY));
    log.debug("Authentication Type: {}", config.getProperty(Context.SECURITY_AUTHENTICATION));
    log.debug("Protocol: {}", config.getProperty(Context.SECURITY_PROTOCOL));
    log.debug("Provider URL: {}", config.getProperty(Context.PROVIDER_URL));
    log.debug("User DN: {}", config.getProperty(Context.SECURITY_PRINCIPAL));
    log.debug("Password: {}", config.getProperty(Context.SECURITY_CREDENTIALS));
  }
  return new InitialLdapContext(config, null);
}

代码示例来源：origin: apache/geode

@Override
public void before() {
 normalizeProperties();
 if (httpPort < 0) {
  // at this point, httpPort is not being configured by api, we assume they do not
  // want to start the http service.
  // use putIfAbsent if it was configured using withProperty
  properties.putIfAbsent(HTTP_SERVICE_PORT, "0");
 }
 firstLevelChildrenFile = Arrays.asList(getWorkingDir().listFiles());
}

代码示例来源：origin: apache/geode

protected void normalizeProperties() {
 // if name is set via property, not with API
 if (name == null) {
  if (properties.containsKey(NAME)) {
   name = properties.getProperty(NAME);
  } else {
   if (this instanceof ServerStarterRule) {
    name = "server";
   } else {
    name = "locator";
   }
  }
  withName(name);
 }
 // if jmxPort is set via property, not with API
 if (jmxPort < 0 && properties.containsKey(JMX_MANAGER_PORT)) {
  // this will make sure we have all the missing properties, but it won't override
  // the existing properties
  withJMXManager(false);
 }
 // if caller wants the logs being put into a file instead of in console output
 // do it here since only here, we can guarantee the name is present
 if (logFile) {
  properties.putIfAbsent(LOG_FILE, new File(name + ".log").getAbsolutePath());
 }
}

代码示例来源：origin: neo4j/neo4j

indexConfiguration.putIfAbsent( FulltextIndexSettings.INDEX_CONFIG_ANALYZER, defaultAnalyzerName );
indexConfiguration.putIfAbsent( FulltextIndexSettings.INDEX_CONFIG_EVENTUALLY_CONSISTENT, defaultEventuallyConsistentSetting );
return new FulltextSchemaDescriptor( schema, indexConfiguration );

代码示例来源：origin: schemaspy/schemaspy

private void processIncludes(Properties props, ResolutionInfo resolutionInfo) {
  Map<String,String> includes = props.entrySet().stream()
      .filter(isInclude)
      .collect(Collectors.toMap(e -> e.getKey().toString(), e -> e.getValue().toString()));
  includes.keySet().forEach(props::remove);
  includes.values().stream()
      .map( s -> s.split("::"))
      .forEach( ref -> {
        Properties refProps = resolve(ref[0], resolutionInfo);
        props.putIfAbsent(ref[1], refProps.getProperty(ref[1]));
      });
}

代码示例来源：origin: spring-projects/spring-kafka

Properties p = new Properties();
p.load(in);
p.forEach((key, value) -> properties.putIfAbsent(key, environment.resolvePlaceholders((String) value)));

代码示例来源：origin: com.sqlapp/sqlapp-core

@Override
public synchronized Object putIfAbsent(Object key, Object value) {
  keys.remove(key);
  return super.putIfAbsent(key, value);
}

代码示例来源：origin: org.infinispan/infinispan-embedded-query

/**
* Dynamic index uninverting is deprecated: using it will cause warnings to be logged,
* to encourage people to use the annotation org.hibernate.search.annotations.SortableField.
* The default in Hibernate Search is to throw an exception rather than logging a warning;
* we opt to be more lenient by default in the Infinispan use case, matching the behaviour
* of previous versions of Hibernate Search.
*
* @param indexingProperties
*/
private void allowDynamicSortingByDefault(Properties indexingProperties) {
 indexingProperties.putIfAbsent(Environment.INDEX_UNINVERTING_ALLOWED, Boolean.TRUE.toString());
}

代码示例来源：origin: com.oracle.substratevm/svm

private void initializeLazyValue(String key) {
  if (!fullyInitialized && lazyRuntimeValues.containsKey(key) && properties.get(key) == null) {
    /*
     * putIfAbsent has the correct synchronization to guard against concurrent manual
     * updates of the same property key.
     */
    properties.putIfAbsent(key, lazyRuntimeValues.get(key).get());
  }
}

代码示例来源：origin: payara/Cloud-Connectors

public static Properties merge(Properties base, Properties addtional){
  Properties properties = new Properties();
  properties.putAll(base);
  if(addtional != null){
    for(String key : addtional.stringPropertyNames()){
      properties.putIfAbsent(key, addtional.getProperty(key));
    }
  }
  return properties;
}

代码示例来源：origin: asakusafw/asakusafw

static void configure() {
    if (SimpleLoggerUtil.class.getClassLoader().getResource(NAME_RESOURCE_FILE) != null) {
      return;
    }
    AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
      Properties props = System.getProperties();
      OPT_DEFAULTS.forEach((k, v) -> props.putIfAbsent(k, v));
      System.setProperties(props);
      return null;
    });
  }
}

代码示例来源：origin: asakusafw/asakusafw

static void configure() {
    if (SimpleLoggerUtil.class.getClassLoader().getResource(NAME_RESOURCE_FILE) != null) {
      return;
    }
    AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
      Properties props = System.getProperties();
      OPT_DEFAULTS.forEach((k, v) -> props.putIfAbsent(k, v));
      System.setProperties(props);
      return null;
    });
  }
}

代码示例来源：origin: com.buschmais.jqassistant.neo4jserver/neo4jv3

@Override
  public Properties getProperties(EmbeddedNeo4jConfiguration embedded) {
    Properties commonProperties = getCommonProperties();
    commonProperties.putIfAbsent(PROPERTY_NEO4J_DBMS_CONNECTOR_BOLT_ENABLED, Boolean.toString(embedded.isConnectorEnabled()));
    commonProperties.putIfAbsent(PROPERTY_NEO4J_DBMS_CONNECTOR_BOLT_LISTEN_ADDRESS, embedded.getListenAddress() + ":" + embedded.getBoltPort());
    commonProperties.putIfAbsent(PROPERTY_NEO4J_DBMS_SECURITY_PROCEDURES_UNRESTRICTED, "apoc.*");
    commonProperties.putIfAbsent(PROPERTY_NEO4J_DBMS_TX_LOG_ROTATION_SIZE, "50M");
    commonProperties.putIfAbsent(PROPERTY_NEO4J_DBMS_TX_LOG_ROTATION_RETENTION_POLICY, Boolean.FALSE.toString());
    return commonProperties;
  }
}

代码示例来源：origin: org.apache.hive/hive-common

@Override
public synchronized Object putIfAbsent(Object key, Object value) {
 if (interned != null) copyFromInternedToThis();
 return super.putIfAbsent(key, value);
}

代码示例来源：origin: de.tudarmstadt.ukp.inception.rdf4j/rdf4j-lucene-spin

/**
 * Add only absent parameters from argument.
 * 
 * @see Properties#putIfAbsent(java.lang.Object, java.lang.Object)
 * @param parameters
 */
public void addAbsentParameters(Properties parameters) {
  parameters.forEach((Object k, Object v) -> {
    LuceneSpinSail.this.parameters.putIfAbsent(k, v);
  });
}

代码示例来源：origin: com.agapsys.libs/web-app-toolkit

/**
 * Returns a new properties merging two instances
 * @param properties main property instance
 * @param defaults contains default properties to be merged if containing entries are not defined in main instance.
 * @return merged instance.
 */
public static Properties mergeProperties(Properties properties, Properties defaults) {
  Properties tmpProperties = new Properties();
  for (Map.Entry mainEntry : properties.entrySet()) {
    tmpProperties.put(mainEntry.getKey(), mainEntry.getValue());
  }
  for (Map.Entry defaultEntry : defaults.entrySet()) {
    tmpProperties.putIfAbsent(defaultEntry.getKey(), defaultEntry.getValue());
  }
  return tmpProperties;
}
// =========================================================================

代码示例来源：origin: salesforce/Argus

/**
 * Returns the list of configured properties and their values.
 *
 * @return  The list of configured properties and their values.
 */
@Override
public synchronized String toString() {
  Properties allProperties = new Properties();
  allProperties.putAll(this);
  for (Property property : Property.values()) {
    allProperties.putIfAbsent(property.key(), property.defaultValue());
  }
  StringBuilder sb = new StringBuilder();
  sb.append("Using the following configured values:\n");
  Pattern pattern = Pattern.compile("pwd|secret|password|passwd|token");
  Set<String> names = new TreeSet<>(allProperties.stringPropertyNames());
  names.stream().forEach((name) -> {
    String value = pattern.matcher(name).find() ? "********" : allProperties.get(name).toString();
    sb.append("\t").append(name).append(" : ").append(value).append("\n");
  });
  return sb.toString();
}