1.12

• Updates writing of changeset XML to allow item properties to be empty.
  Specifically impacts handling of JSON columns with null values.
  Previously, a null value in a JSON map value would cause a runtime
  exception while generating the changeset, and the changeset XML would be
  invalid.

1.11

• Adds validation of changeset SQL against the database on startup. May be
  skipped by setting validate_sql=false in datatool.properties.
• Adds progress logging of changeset creation. Uses same progress log message
  formatting as Discovery Engine.
• Makes all references to columns in XML configuration attributes
  case-insensitive (e.g. idColumn, provider, kind, discriminator,
  jsonColumns, jsonColumnNames, scopedJsonColumnNames, mergeColumns/@name and
  mergeColumns/@value).
• Updates discovery_datatool shell script to default the http port to 8089.
  Note that if you want to listen for both HTTP and HTTPS, then you need to
  specify both http_port and https_port in datatool.properties.
• Removes extraneous chatter and warnings from log output.

1.10

• Simplifies process of setting up init.d script. Startup options are largely
  specified in datatool.properties. See init-script/README for detailed
  instructions. Removes use of jakarta-commons-daemon (jsvc).
• Changes logging.properties to log to a file with rotation at 10mb keeping
  up to 30 files.

1.9

• Fixes defect in add-to-item configuration parsing: add-to-item was only
  read from delta configuration elements. add-to-item elements in snapshots
  were ignored. delta add-to-item elements were incorrectly used by the
  publisher's snapshots.

1.8

• Adds configuration attribute for item property-case (preserve, lower, upper
  and legacy). Starting with new schema version 7, the default is preserve. Older
  schema versions continue to have the legacy behavior of lowercasing
  property names from column names but not from pivoted values.

  preserve - Use whatever case we get back from the database
  lower - All property names are converted to locale lower case
  upper - All property names are converted to locale upper case
  legacy - Property names from sql column labels are converted to lower case,
  but property names from vertical table values are preserved.

• Fixes "If a subquery is empty, it should be ignored (and reported) and not
  throw an error."

• Adds support for unscopedJsonColumns to be able to merge in JSON column
  data to the top level properties. Deprecates property "jsonColumnNames" in
  favor of more explicit "scopedJsonColumns" for the same behavior. Adds new
  property "unscopedJsonColumns" for columns that should be merged into the
  top-level item properties.

• Makes subqueries use NullDefaultCaseInsensitiveParameterSource. If subquery
  uses a bound parameter that is not present in the main item properties, then
  null is used for the parameter value.

1.7

• Adds support for add-to-item for deltas and snapshots (the Discovery Engine
  does not support add-to-item for bulk or full changesets). The add-to-item
  configuration element supports the same attributes and child configuration
  elements as set-item.
• Adds another subquery test scenario.
• Fixes Data Tool Outputs Empty Strings: If a column returns an empty string,
  the data tool still outputs the column value. Empty strings should not be
  output.
• Fixes merge-columns should not be case sensitive.

1.6

• Adds support for provider and kind to Discovery Data Tool. The
  configuration elements can now take optional attributes providerColumn and
  kindColumn. If either of these are specified, then the resulting changeset
  set-item and remove-item elements will not have an id attribute, and instead
  will have locator, provider and kind attributes. The providerColumn and
  kindColumn are not included in the resulting set-item properties, since that
  would be redundant.
• No longer includes id column in set-item properties, since it is redundant
  to the set-item id attribute.

1.5

• Adds support for "vertical" tables.

1.4

• Creates new version of Data Tool Configuration XML schema to support bulk
  and full changesets and subqueries.
• Adds support for bulk and full changesets in addition to snapshots.
• Adds support for a wide variety of subquery types in order to better
  support flattening complex database structures without the use of views or
  stored procedures.
• Fixes WebServerMain to handle paths with spaces in directory names. Fixes
  problem where datatool cannot be run if its path contains spaces.
• Updates tests to verify tool continutes to be backwards compatible in
  parsing all versions of the configuration xml.
• Adds support for column aliases.
• Makes named SQL parameter matching case insensitive by creating and using
  CaseInsensitveParameterSource (based on Spring's MapSqlParameterSource,
  which unfortunately does not allow plugging in a different Map
  implementation). All tests now pass.
• Updates logging.properties to log com.t11e.discovery.datatool at FINE. And
  adds a comment explaining how to enable logging sql query execution speed.
  Turns down default level to WARNING (which quiets Spring).
• Adds test to show that Discovery Data Tool can call stored procedures.

1.3

• Adds forceSnapshot boolean parameter to ChangesetController. If true, then
  start date of null is used and a snapshot is created regardless of the
  profile's last run time.