org.apache.cayenne.util.Util.isEmptyString()方法的使用及代码示例

x33g5p2x  于2022-02-01 转载在 其他  
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本文整理了Java中org.apache.cayenne.util.Util.isEmptyString()方法的一些代码示例，展示了Util.isEmptyString()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。Util.isEmptyString()方法的具体详情如下：
包路径：org.apache.cayenne.util.Util
类名称：Util
方法名：isEmptyString

Util.isEmptyString介绍

[英]Returns true, if the String is null or an empty string.
[中]如果字符串为null或空字符串，则返回true。

代码示例

代码示例来源：origin: org.apache.cayenne.modeler/cayenne-modeler

  1. public String getColumnName(int column) {
  2.   // per CAY-513 - if an empty string is passed for header, table header will
  3.   // have zero height on Windows... So we have to check for this condition
  4.   return Util.isEmptyString(headers[column]) ? " " : headers[column];
  5. }

代码示例来源：origin: org.apache.cayenne/cayenne-server

  1. /**
  2.  *
  3.  * @return package + "." + name when it is possible otherwise just name
  4.  *
  5.  * @since 4.0
  6.  */
  7. public static String getNameWithPackage(String pack, String name) {
  8.   if (Util.isEmptyString(pack)) {
  9.     return name;
  10.   } else {
  11.     return pack + (pack.endsWith(".") ? ""  : ".") + name;
  12.   }
  13. }

代码示例来源：origin: org.apache.cayenne.modeler/cayenne-modeler

  1. public File getFile() {
  2.   String value = fileName.getText();
  3.   if (Util.isEmptyString(value)) {
  4.     return null;
  5.   }
  6.   File file = new File(value);
  7.   if (existingOnly && !file.exists()) {
  8.     return null;
  9.   }
  10.   return file;
  11. }

代码示例来源：origin: org.apache.cayenne/cayenne-nodeps

  1. String buildExceptionMessage(String message, Throwable th) {
  2.   StringBuffer buffer = new StringBuffer(message);
  3.   buffer.append(". URL - ").append(url);
  4.   String thMessage = th.getMessage();
  5.   if (!Util.isEmptyString(thMessage)) {
  6.     buffer.append("; CAUSE - ").append(thMessage);
  7.   }
  8.   return buffer.toString();
  9. }

代码示例来源：origin: org.apache.cayenne/cayenne-server

  1. /**
  2.  * Configures an "extra" path that will resolve to an extra column (or columns) in the
  3.  * result set.
  4.  * 
  5.  * @param path A valid path expression. E.g. "abc" or "db:ABC" or "abc.xyz".
  6.  * @since 1.2
  7.  */
  8. public void addResultPath(String path) {
  9.   if (Util.isEmptyString(path)) {
  10.     throw new IllegalArgumentException("Invalid path: " + path);
  11.   }
  12.   nonNullResultPaths().add(path);
  13. }

代码示例来源：origin: org.apache.cayenne/cayenne-nodeps

  1. /**
  2.  * Configures an "extra" path that will resolve to an extra column (or columns) in the
  3.  * result set.
  4.  * 
  5.  * @param path A valid path expression. E.g. "abc" or "db:ABC" or "abc.xyz".
  6.  * @since 1.2
  7.  */
  8. public void addResultPath(String path) {
  9.   if (Util.isEmptyString(path)) {
  10.     throw new IllegalArgumentException("Invalid path: " + path);
  11.   }
  12.   nonNullResultPaths().add(path);
  13. }

代码示例来源：origin: org.apache.cayenne/cayenne-nodeps

  1. /**
  2.  * Decodes the String (assuming it is using Base64 encoding), and then deserializes
  3.  * object from the byte array.
  4.  */
  5. static Object deserializeFromString(String string) throws Exception {
  6.   if (Util.isEmptyString(string)) {
  7.     return null;
  8.   }
  9.   byte[] bytes = Base64Codec.decodeBase64(string.getBytes());
  10.   ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bytes));
  11.   Object object = in.readObject();
  12.   in.close();
  13.   return object;
  14. }

代码示例来源：origin: org.apache.cayenne/cayenne-server

  1. /**
  2.  * Looks up an existing node in the tree desribed by the dot-separated path.
  3.  * Will return null if no matching child exists.
  4.  */
  5. public PrefetchTreeNode getNode(String path) {
  6.   if (Util.isEmptyString(path)) {
  7.     throw new IllegalArgumentException("Empty path: " + path);
  8.   }
  9.   PrefetchTreeNode node = this;
  10.   StringTokenizer toks = new StringTokenizer(path, Entity.PATH_SEPARATOR);
  11.   while (toks.hasMoreTokens() && node != null) {
  12.     String segment = toks.nextToken();
  13.     node = node.getChild(segment);
  14.   }
  15.   return node;
  16. }

代码示例来源：origin: org.apache.cayenne/cayenne-nodeps

  1. protected void validateConnection(DataNode node, ProjectPath path, Validator validator) {
  2.   String factory = node.getDataSourceFactory();
  3.   // If direct factory, make sure the location is a valid file name.
  4.   if (Util.isEmptyString(factory)) {
  5.     validator.registerError("No DataSource factory.", path);
  6.   }
  7.   else if (!DriverDataSourceFactory.class.getName().equals(factory)) {
  8.     String location = node.getDataSourceLocation();
  9.     if (Util.isEmptyString(location)) {
  10.       validator.registerError("DataNode has no location parameter.", path);
  11.     }
  12.   }
  13. }

代码示例来源：origin: org.apache.cayenne/cayenne-project

  1. void validateDefaultSQL(SQLTemplateDescriptor query, ValidationResult validationResult) {
  2.   if (Util.isEmptyString(query.getSql())) {
  3.     // see if there is at least one adapter-specific template...
  4.     for (Map.Entry<String, String> entry : query.getAdapterSql().entrySet()) {
  5.       if (!Util.isEmptyString(entry.getValue())) {
  6.         return;
  7.       }
  8.     }
  9.     addFailure(
  10.         validationResult,
  11.         query,
  12.         "SQLTemplate query '%s' has no default SQL template",
  13.         query.getName());
  14.   }
  15. }

代码示例来源：origin: org.apache.cayenne/cayenne-nodeps

  1. protected void validateDefaultSQL(
  2.     SQLTemplate query,
  3.     ProjectPath path,
  4.     Validator validator) {
  5.   if (Util.isEmptyString(query.getDefaultTemplate())) {
  6.     // see if there is at least one adapter-specific template...
  7.     Iterator it = query.getTemplateKeys().iterator();
  8.     while (it.hasNext()) {
  9.       String key = (String) it.next();
  10.       if (!Util.isEmptyString(query.getCustomTemplate(key))) {
  11.         return;
  12.       }
  13.     }
  14.     validator.registerWarning("Query has no default SQL template", path);
  15.   }
  16. }

代码示例来源：origin: org.apache.cayenne/cayenne-project

  1. void validate(DataChannelDescriptor domain, ValidationResult validationResult) {
  3.     String name = domain.getName();
  4.     if (Util.isEmptyString(name)) {
  5.       addFailure(validationResult, domain, "Unnamed DataDomain");
  6.     }
  7.   }
  8. }

代码示例来源：origin: org.apache.cayenne/cayenne-project

  1. void validateConnection(DataNodeDescriptor node, ValidationResult validationResult) {
  2.   String factory = node.getDataSourceFactoryType();
  3.   // TODO: andrus 03/10/2010 - null factory is allowed, however
  4.   // 'getDataSourceDescriptor' must ne not null in this case
  5.   if (factory != null
  6.       && !XMLPoolingDataSourceFactory.class.getName().equals(factory)) {
  7.     String parameters = node.getParameters();
  8.     if (Util.isEmptyString(parameters)) {
  9.       addFailure(
  10.           validationResult,
  11.           node,
  12.           "DataNode has empty 'parameters' string");
  13.     }
  14.   }
  15. }

代码示例来源：origin: org.apache.cayenne/cayenne-nodeps

  1. public void addChild(PrefetchTreeNode child) {
  2.   if (Util.isEmptyString(child.getName())) {
  3.     throw new IllegalArgumentException("Child has no segmentPath: " + child);
  4.   }
  5.   if (child.getParent() != this) {
  6.     child.getParent().removeChild(child.getName());
  7.     child.parent = this;
  8.   }
  9.   if (children == null) {
  10.     children = new ArrayList(4);
  11.   }
  12.   children.add(child);
  13. }

代码示例来源：origin: org.apache.cayenne/cayenne-server

  1. public void addChild(PrefetchTreeNode child) {
  2.   if (Util.isEmptyString(child.getName())) {
  3.     throw new IllegalArgumentException("Child has no segmentPath: " + child);
  4.   }
  5.   if (child.getParent() != this) {
  6.     child.getParent().removeChild(child.getName());
  7.     child.parent = this;
  8.   }
  9.   if (children == null) {
  10.     children = new ArrayList<>(4);
  11.   }
  12.   children.add(child);
  13. }

代码示例来源：origin: org.apache.cayenne/cayenne-project

  1. void validate(EmbeddableAttribute attribute, ValidationResult validationResult) {
  3.     // Must have name
  4.     if (Util.isEmptyString(attribute.getName())) {
  5.       addFailure(validationResult, attribute, "Unnamed EmbeddableAttribute");
  6.     }
  8.     // all attributes must have type
  9.     if (Util.isEmptyString(attribute.getType())) {
  10.       addFailure(
  11.           validationResult,
  12.           attribute,
  13.           "EmbeddableAttribute '%s' has no type",
  14.           attribute.getName());
  15.     }
  16.   }
  17. }

代码示例来源：origin: org.apache.cayenne/cayenne-project

  1. private void validateJavaPackage(DataMap map, ValidationResult validationResult) {
  2.     String javaPackage = map.getDefaultPackage();
  4.     if(Util.isEmptyString(javaPackage)) {
  5.       addFailure(validationResult, map, "Java package is not set in DataMap '%s'", map.getName());
  6.       return;
  7.     }
  9.     NameValidationHelper helper = NameValidationHelper.getInstance();
  10.     String invalidChars = helper.invalidCharsInJavaClassName(javaPackage);
  11.     if(invalidChars != null) {
  12.       addFailure(validationResult, map, "DataMap '%s' Java package '%s' contains invalid characters: %s",
  13.           map.getName(), javaPackage, invalidChars);
  14.     }
  15.   }
  16. }

代码示例来源：origin: org.apache.cayenne/cayenne-project

  1. void validate(ObjAttribute attribute, ValidationResult validationResult) {
  2.   validateName(attribute, validationResult);
  3.   // all attributes must have type
  4.   if (Util.isEmptyString(attribute.getType())) {
  5.     addFailure(validationResult, attribute,
  6.         "ObjAttribute '%s' has no Java type",
  7.         attribute.getName());
  8.   }
  9.   if (attribute instanceof EmbeddedAttribute) {
  10.     validateEmbeddable((EmbeddedAttribute)attribute, validationResult);
  11.   } else {
  12.     validateDbAttribute(attribute, validationResult);
  13.   }
  14.   checkForDuplicates(attribute, validationResult);
  15.   checkSuperEntityAttributes(attribute, validationResult);
  16. }

代码示例来源：origin: org.apache.cayenne.modeler/cayenne-modeler

  1. protected void initBindings() {
  2.   // bind actions
  3.   BindingBuilder builder = new BindingBuilder(
  4.       getApplication().getBindingFactory(),
  5.       this);
  6.   CayenneProjectPreferences cayPrPref = application.getCayenneProjectPreferences();
  7.   this.preferences = (PreferenceDetail) cayPrPref.getProjectDetailObject(
  8.       PreferenceDetail.class,
  9.       getViewPreferences().node("controller"));
  10.   if (Util.isEmptyString(preferences.getProperty("mode"))) {
  11.     preferences.setProperty("mode", STANDARD_OBJECTS_MODE);
  12.   }
  13.   builder.bindToComboSelection(
  14.       view.getGenerationMode(),
  15.       "preferences.property['mode']").updateView();
  16. }

代码示例来源：origin: org.apache.cayenne.modeler/cayenne-modeler

  1. protected void updateSuperclass() {
  2.   boolean doAll = isAllEntities();
  3.   String defaultSuperclass = getSuperclass();
  4.   for (ObjEntity entity : dataMap.getObjEntities()) {
  5.     if (doAll || Util.isEmptyString(getSuperClassName(entity))) {
  6.       if (!Util.nullSafeEquals(defaultSuperclass, getSuperClassName(entity))) {
  7.         setSuperClassName(entity, defaultSuperclass);
  8.         // any way to batch events, a big change will flood the app with
  9.         // entity events..?
  10.         mediator.fireDbEntityEvent(new EntityEvent(this, entity));
  11.       }
  12.     }
  13.   }
  14.   view.dispose();
  15. }

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