Klasse QueryValueProvider

java.lang.Object
com.inet.report.SQLValueProvider
com.inet.report.QueryValueProvider
Alle implementierten Schnittstellen:
CascadingSource, DynamicValueProvider, HasCascadingParent, NodeParser, Serializable
public class QueryValueProvider extends SQLValueProvider implements CascadingSource, HasCascadingParent
This implementation of DynamicValueProvider takes a given SQL statement and executes it as a query on the given data source. This is done via Connection.createStatement() and Statement.executeQuery(String), which means that the SQL query can be any standard SQL statement. SPs also work for most databases, but not for Oracle or PostgreSQL.
The ResultSet returned should have the data of the first column be for the value and, if desired, have a second column with data for the description of each default value. Optionally instead, there should be a column called 'value' and a column called 'description'.
Seit:
7.0
Siehe auch:

  • Konstruktordetails

    • QueryValueProvider

      public QueryValueProvider(String query, Datasource datasource)
      Creates an instance of QueryValueProvider with the given query and data source. The query's ResultSet should have its first column be the value of each default value and an optional second column will be used as the description of each default value. Optionally instead, there should be a column called 'value' and a column called 'description'.
      Parameter:
      query - Query to use to extract default values from, may not be null. Its ResultSet should have its first column be the value of each default value and an optional second column will be used as the description of each default value. Optionally instead, there should be a column called 'value' and a column called 'description'.
      datasource - data source to run the query on, may not be null
      Löst aus:
      IllegalArgumentException - if the query or the data source is null
      Seit:
      7.0
      Siehe auch:

  • Methodendetails

    • setDatasource

      public void setDatasource(Datasource datasource)
      Sets the data source on which the query is to be executed.
      Parameter:
      datasource - data source to execute the query on.
      Löst aus:
      IllegalArgumentException - if datasource is null
      Seit:
      7.0

    • getDatasource

      public Datasource getDatasource()
      Returns the data source the query is to be run on
      Angegeben von:
      getDatasource in Klasse SQLValueProvider
      Gibt zurück:
      data source to use

    • setSQL

      @Deprecated public void setSQL(String query)
      Veraltet.
      As of i-net Clear Reports 16, use setQuery(String) instead
      Query to execute. Should be a SELECT statement, but on databases which support a simple execute of an SP, it can be a Stored Procedure call.
      Parameter:
      query - Query to execute. Its ResultSet should have its first column be the value of each default value and an optional second column will be used as the description of each default value.
      Löst aus:
      IllegalArgumentException - if query is null
      Seit:
      7.0

    • setQuery

      public void setQuery(String query)
      Query to execute. Should be a SELECT statement, but on databases which support a simple execute of an SP, it can be a Stored Procedure call. This can contains place holders for formulas like SQL Command.
      Parameter:
      query - Query to execute. Its ResultSet should have its first column be the value of each default value and an optional second column will be used as the description of each default value.
      Löst aus:
      IllegalArgumentException - if query is null
      Seit:
      16.0

    • getQuery

      public String getQuery()
      Get the current query to execute.
      Gibt zurück:
      the query
      Seit:
      16.0

    • getSQL

      public String getSQL() throws ReportException
      Returns the query which is to be used for fetching the values and optionally descriptions dynamically.
      Angegeben von:
      getSQL in Klasse SQLValueProvider
      Gibt zurück:
      query to be used
      Löst aus:
      ReportException - if the database structure does allow a single joined query

    • getFieldRefName

      public String getFieldRefName()
      Returns the name to be used as the SQL reference name in the WHERE part of the query used by a cascading prompt referencing this as its parent. The WHERE part of the SQL query will resemble something like "WHERE (reference name = prompt value)".
      Angegeben von:
      getFieldRefName in Schnittstelle CascadingSource
      Gibt zurück:
      Reference name of the parent source for a cascading prompt
      Siehe auch:

    • setFieldRefName

      public void setFieldRefName(String refName)
      Sets the reference name to use if this provider used as a parent source to a cascading prompt.
      Parameter:
      refName - Reference name to use in the SQL query to filter cascading results if this provider is referenced as a parent to a cascading prompt.
      Seit:
      7.0

    • parseElement

      public NodeParser parseElement(com.inet.report.parser.XMLTag group, String tag, Attributes atts, Map<String,Object> parserMap) throws FatalParserException
      FOR INTERNAL USE ONLY Internal method for reading report XML

      Parses an XML node with the given information, and returns either a sub-element which was created as a result, or null if no sub-element was created, i.e. the information was applied to the ReportComponent itself. Note that the parsing is highly tolerant, i.e. exceptions are intercepted and suppressed if at all possible.

      Angegeben von:
      parseElement in Schnittstelle NodeParser
      Parameter:
      group - XMLTag of the current node to be parsed, or null if there is no such current group. An XMLTag is a group of nodes bundled together, usually it is a Properties node such as CommonProperties, BorderProperties, etc.
      tag - The XMLTag to be parsed
      atts - The set of attributes in the current XMLTag
      parserMap - The map of current Parser.
      Gibt zurück:
      The NodeParser sub-element if one needed to be created, or null if none was created.
      Löst aus:
      FatalParserException - if an exception occurs which causes the report to not be able to be read: causes the abortion of the reading of the report.

    • getParent

      public PromptField getParent()
      Returns the set parent prompt field
      Angegeben von:
      getParent in Schnittstelle HasCascadingParent
      Gibt zurück:
      Parent prompt field for this cascading provider.

    • setParent

      public void setParent(PromptField parent)
      Sets the parent prompt field which is to be used for filtering the default values.
      Angegeben von:
      setParent in Schnittstelle HasCascadingParent
      Parameter:
      parent - Parent prompt field, may not be null and must have a FieldValueProvider