JasperReports Library 6.3.1 Change Log

• new JSONQL query language with advanced syntax for queries and for field mapping
  expressions to allow more complex field mapping scenarios including the ability to map
  fields to the parent node values; this new query language and its respective query executer,
  which offers XPath-like capabilities, deprecate the existing JSON query language and
  the former query executer;

• support for request headers was added to HTTP data adapters as well as improved
  parameter mapping using custom parameter properties to markup dataset parameters which
  contribute to the HTTP request; the new sample under /demo/samples/httpdataadapters shows
  some of these improvements;

• new evaluationTime attribute added to dataset parameter definition to control the exact
  moment when the default value expression of the parameter is evaluated; the default evaluation
  time for parameters which do not specify a value for the attribute is controlled using the
  net.sf.jasperreports.parameter.evaluation.time configuration property;

• support for property expressions added for dataset fields to allow more flexibility in
  data source and query executer field mapping;

• the use of the fieldDescription attribute in data source and query executer field mapping
  is now deprecated by the introduction of special field level custom properties for each type
  of data source and query executer;

• support for property expressions in dataset was added to allow more flexibility in dataset
  and report configuration, including the ability to control export properties using report parameters;
  the report and dataset property expressions can be evaluated at different moments and this is
  controlled by the their evaluationTime attribute; when evaluationTime attribute is not specified
  for a property expression, it defaults to the value specified by the
  net.sf.jasperreports.property.evaluation.time configuration property;

• multiple chart customizer objects can be registered per chart element using new configuration
  properties having the net.sf.jasperreports.customizer.class.{arbitrary_name} format;
  the new sample under /demo/samples/chartcustomizers introduces a set of pre-defined chart
  customizers which are ready to use in reports;

• the data adapter extension is now enabled by default in all JasperReports deployments;

• the XLS, XLSX, DOCX and PPTX exporters were enhanced to support specifying metadata
  information such as title, subject, author, keywords and creator application for the
  generated documents using export configuration properties;

• minor bug fixes and improvements;