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Java Open Clients

Handle returned values

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Table of Contents
  • Configure and Deploy Java Open Client Applications
    • Java Open Client Runtime package
    • Prepare to generate proxies for a Java client in Windows using ProxyGen or Batch ProxyGen
    • Prepare to generate proxies for a Java client on UNIX using Batch ProxyGen
    • Build an Open Client application that uses a Java proxy
    • Deploy an Open Client application that uses a Java proxy
  • Proxy Objects and Methods
    • Introduction
    • Proxy objects
      • Package
    • Proxy methods
      • Connection methods
      • Remote ABL methods
        • Pass parameters
        • Handle return values
      • Class factory methods
        • SubAppObject
        • ProcObject
        • SDOResultSet
      • Common methods
        • Cancel all requests
        • Connection ID
        • Stream
        • Procedure return string
        • Release
        • Request ID
        • TLS subject name
        • Procedure type
    • Run methods on session-free AppObjects
      • Session-free threading model
      • Share of the connection pool between session-free AppObjects
    • Sample proxy
      • Sample AppObject
      • Sample SubAppObject
      • Sample ProcObject
  • Connect to an application server
    • Connection class
    • Client principal class
      • Attributes of the ClientPrincipal class
      • Methods of the ClientPrincipal class
    • Establish the connection
      • Return a user defined string to the client from the application server connection procedure
      • Supported application server modes
      • Release a session-free Connection object
    • Connection states
  • Pass Parameters
    • ABL data type mappings
      • INPUT parameters
      • Date and time conversions
      • Arrays as parameters
        • Unknown value (?) as a parameter
        • Arrays and Unknown value (?)
      • INPUT-OUTPUT and OUTPUT parameters
        • Holder classes
        • Holder class definitions
    • Pass temp-tables and ProDataSets
      • Static and dynamic temp-tables and ProDataSets
      • ABL mechanisms for passing temp-tables and ProDataSets
      • Java mechanisms for passing temp-tables and ProDataSets
        • ProDataGraph mechanism
        • SQL ResultSets mechanism
        • Choose the parameter passing mechanism
      • Map temp-table field data types and meta data
        • Java data type mappings for temp-table fields
        • Meta data for specifying the ABL data types of temp-table fields
  • Access ABL ProDataSets
    • Introduce ABL ProDataSets
    • ProDataSets and using ProDataGraphs to access them
      • ProDataSet structure and usage
        • Abstract data sources
        • Track changes
      • ProDataGraph function and foundations
        • Java SDO Foundations
        • Java SDO extensions
      • ProDataGraph object model
    • Prepare and pass ProDataSets as ProDataGraph parameters
      • Prepare and manage a ProDataGraph parameter
        • Parameter passing modes
        • ProDataGraphHolder class
      • Manage ProDataObject mappings to temp-tables
        • Map single-valued fields
        • Map array fields
        • Map the Unknown value (?)
        • Specify initial values
      • Pass a ProDataGraph as OUTPUT
        • Access a ProDataGraph with a known schema
        • Access the ProDataGraph meta data for an unknown schema
      • Pass a ProDataGraph as INPUT or INPUT-OUTPUT
        • Prepare an input ProDataGraph
        • Create and initialize a ProDataGraph object with meta data
        • Add data to a ProDataGraph
    • Update a ProDataSet
      • Typical cycle for ProDataSet updates
      • Manage a ProDataGraph through the update cycle
      • Check for errors
        • ProDataGraph level
        • Table level
        • Row level
      • Find a row in a ProDataGraph
        • Find parent rows
        • Find child rows
      • Add a row to a ProDataGraph
      • Delete a row from a ProDataGraph
    • Pass temp-tables as ProDataGraph parameters
    • ProDataGraph class
      • Constructors
        • ProDataGraph created from meta data
        • ProDataGraph created from an initial DataGraph
      • Inherited methods
        • getChangeSummary( )
        • getRootObject( )
      • Extended methods
        • acceptChanges( )
        • addProDataObject( )
        • createProDataObject( )
        • getMetaData( )
        • getNumTables( )
        • getProChangeSummary( )
        • getProDataObjects( )
        • getProDataGraphName( )
        • getTableNames( )
        • hasError( )
        • setChildTableReferences( )
      • Related RunTimeProperties methods for ProDataGraph
    • ProDataObject class
      • Inherited methods
        • get( )
        • getBigDecimal( )
        • getBoolean( )
        • getBytes( )
        • getInt( )
        • getList( )
        • getLong( )
        • getString( )
        • getType( )
        • isSet( )
        • set( )
        • setBigDecimal( )
        • setBoolean( )
        • setBytes( )
        • setInt( )
        • setList( )
        • setLong( )
        • setString( )
      • Extended methods
        • getChildRows( )
        • getFieldCount( )
        • getGregorianCalendar( )
        • getParentRow( )
        • getRowErrorString( )
        • getTableErrorString( )
        • getTableName( )
        • hasRowError( )
        • hasTableError( )
        • setGregorianCalendar( )
    • ProChangeSummary class
      • Inherited methods
        • beginLogging( )
        • endLogging( )
        • getChangedDataObjects( )
        • getOldValues( )
        • isCreated( )
        • isDeleted( )
      • Extended method
        • getChanges( )
    • ProDataGraphMetaData class
      • Constructor
      • Methods
        • addDataRelation( )
        • addTable( )
        • getNumRelations( )
        • getNumTables( )
        • getRelationMetaData( )
        • getTableMetaData( )
        • getTableNames( )
    • ProDataObjectMetaData class
      • Constructor
      • Methods
        • getBImageFlag( )
        • getExtent( )
        • getFieldCount( )
        • getFieldName( )
        • getNoSchemaMarshal( )
        • getProType( )
        • getTableName( )
        • getUserOrder( )
        • setFieldMetaData( )
        • setNoSchemaMarshal( )
    • ProDataRelationMetaData class
      • Constructors
        • Create a data-relation from parent and child ProDataObjectMetaData
        • Create a data-relation from selected parent and child key fields
      • Methods
        • getChildColumns( )
        • getChildTable( )
        • getParentColumns( )
        • getParentTable( )
        • getRelationName( )
        • setColumns( )
    • Use Java SDO classes to access Property meta data
      • Type interface
        • Methods
      • Property interface
        • Methods
  • Extend Proxy Objects
    • Example of extending proxy objects
  • Access Proxy Properties
    • Introduce proxy properties
    • Set properties on the command line
    • RunTimeProperties and Connection classes
      • RunTimeProperties class
      • Connection class
    • Access properties with methods
      • General property accessor methods for the RunTimeProperties class
        • Get property methods syntax
        • Set property methods syntax
      • General property accessor methods for Connection objects
        • Get property methods
        • Set property methods
      • Available properties
      • Access properties using purposed accessor methods
        • Session methods
        • Thread control methods
        • Proxy server specification methods
        • Transport Layer Security management methods
        • Trace methods (RunTimeProperties only)
        • Compression methods
    • Relationship between the RunTimeProperties class and the Connection class
    • Modify an instantiated Connection object's properties
    • Alphabetical list of properties
      • PROGRESS.Session.AppServerKeepalive
      • PROGRESS.Session.CertificateStore
      • PROGRESS.Session.certificateStorePassword
      • PROGRESS.Session.certificateStoreProvider
      • PROGRESS.Session.certificateStoreType
      • PROGRESS.Session.cleanIdleAvailableSessions
      • PROGRESS.Session.ClientContextID
      • PROGRESS.Session.clientPrincipal
      • PROGRESS.Session.EnableCompression
      • PROGRESS.Session.CompressionLevel
      • PROGRESS.Session.CompressionThreshold
      • PROGRESS.Session.connectionLifetime
      • PROGRESS.Session.connectionTimeout
      • PROGRESS.Session.DatasetNullInitials
      • PROGRESS.Session.enableTracing
      • PROGRESS.Session.idleConnectionTimeout
      • PROGRESS.Session.initialConnections
      • PROGRESS.Session.LogFileName
      • PROGRESS.Session.loggingLevel
      • PROGRESS.Session.LogEntryTypes
      • PROGRESS.Session.maxConnections
      • PROGRESS.Session.minConnections
      • PROGRESS.Session.noHostVerify
      • PROGRESS.Session.noSslSessionReuse
      • PROGRESS.Session.nsClientMaxPort
      • PROGRESS.Session.nsClientMinPort
      • PROGRESS.Session.nsClientPicklistExpiration
      • PROGRESS.Session.nsClientPicklistSize
      • PROGRESS.Session.nsClientPortRetry
      • PROGRESS.Session.nsClientPortRetryInterval
      • PROGRESS.Session.PostponeRelationInfo
      • PROGRESS.Session.proxyHost
      • PROGRESS.Session.proxyPassword
      • PROGRESS.Session.proxyPort
      • PROGRESS.Session.proxyUserId
      • PROGRESS.Session.requestWaitTimeout
      • PROGRESS.Session.secureRandomImplementation
      • PROGRESS.Session.secureRandomProvider
      • PROGRESS.Session.sessionModel
      • PROGRESS.Session.waitIfBusy
  • Handle Errors
    • Exceptions
    • General ABL exceptions
      • Exception class hierarchy
      • Exception descriptions
    • Output ResultSet exceptions
  • Use SmartDataObjects from Java Clients
    • What is a SmartDataObject?
    • Access remote SmartDataObjects from Java
      • Requirements for accessing SmartDataObjects
      • Example Java access to a SmartDataObject
    • SmartDataObject access tools and documentation
      • Objects required to access SmartDataObjects
      • Develop and deploy a SmartDataObject-aware application
        • Extend a SmartDataObject
      • Write a SmartDataObject-aware Java client
    • Connect to an application server using an SDOAppObject
    • Create an SDOResultSet object
      • The _createSDOResultSet() method
      • Set and get values on the SDOParameters object
      • Understand SDOResultSet scrolling modes
      • Understand SDOResultSet stateless mode
    • Work with SDOResultSet objects
      • Detach SDOResultSet objects [extension]
      • Navigate SDOResultSet rows
      • Get SDOResultSet column values
      • Update SDOResultSet objects
        • Transactions and concurrency control
        • Update column values
        • Insert, delete, and update rows
        • Use extended transactions
        • Use batch mode [extension]
        • Visibility of updates
      • Miscellaneous management methods
        • Standard JDBC 2 management methods
        • SmartDataObject management methods [extension]
        • Note on SDOInterface method
      • Meta data methods
        • JDBC 2 meta data methods
        • Nonstandard meta data methods [extension]
    • Multi-threading
    • Errors and exceptions
      • SDOResultSet exceptions
      • Typical errors by method category
    • Choose JDBC ResultSets or SDOResultSets to access OpenEdge data
  • Use the Open Client Java OpenAPI to Directly Access an Application Server
    • Overview of Java OpenAPI classes and enumerations
    • Connect to an application server
    • Run procedures and user-defined functions
      • Return the validity of the server session on an OpenAppObject
      • Run a non-persistent procedure on an OpenAppObject
      • Run a persistent procedure (OpenProcObject) on an OpenAppObject
      • Run a single-run or singleton procedure (OpenProcObject) on an OpenAppObject
      • Run an internal procedure or user-defined function on an OpenProcObject
    • Set up parameters
      • Create variables for parameters
      • Create a parameter array
      • Set the input and output error reset policy for the parameter array
      • Add parameters using data type-specific methods
        • General syntax for add parameter methods
        • Syntax summaries of all data type-specific add parameter methods
        • CHARACTER
        • COM-HANDLE
        • DATASET and DATASET-HANDLE
        • DATE
        • DATETIME
        • DATETIME-TZ
        • DECIMAL
        • HANDLE
        • INT64
        • INTEGER
        • LOGICAL
        • LONGCHAR
        • MEMPTR
        • RAW
        • RECID
        • ROWID
        • TABLE and TABLE-HANDLE
      • Add parameters using a generic method
      • Define the return type for a user-defined function
      • Arrays as return values
        • setIsReturnExtent( ) method
        • Handle unknown values in arrays.
        • setIsReturnUnknown( ) method
      • Define the schema for a temp-table parameter mapped to a java.sql.ResultSet
        • Define a ProResultSetMetaDataImpl object
        • Add field descriptions to the ProResultSetMetaDataImpl object
        • Add the ProResultSetMetaDataImpl object as a temp-table parameter
      • Define the schema for a ProDataSet parameter
        • Define a ProDataGraphMetaData object
        • Define the temp-tables for the ProDataGraphMetaData object
        • Define the data-relations for the ProDataGraphMetaData object
        • Define a ProDataGraph for any input parameter
        • Specify the ProDataGraphMetaData object for a ProDataSet parameter
      • Define the schema for temp-tables in a ProDataSet
        • Define a ProDataObjectMetaData object
        • Add field descriptions to the ProDataObjectMetaData object
        • Add the ProDataObjectMetaData object to the ProDataGraphMetaData
      • Define the schema for a temp-table parameter mapped to a ProDataGraph
    • Pass parameters
      • Pass INPUT parameters
      • Pass INPUT-OUTPUT parameters
      • Pass OUTPUT parameters
    • Handle returned values
      • Get OUTPUT parameter values
      • Access RETURN-VALUE function output from procedures
      • Access user-defined function return values
    • Sample Java OpenAPI code
      • Non-persistent procedure example
      • Persistent procedure example
      • Single-run/singleton procedure example
      • Pass DATASET and TABLE parameters example
      • Pass DATASET-HANDLE and TABLE-HANDLE parameters example
  • Access a SmartDataObject API Directly
    • Introduction
    • Directly access the SmartDataObject API in a proxy
    • Define a ProcObject that maps a SmartDataObject
  • Secure server connections to Java Open Clients
    • Import server certificates on Java Open Clients
    • Manage certificate store files
    • Convert digital certificates
    • Use custom certificate store types and JCE providers
  • Pass Temp-tables as SQL ResultSet Parameters
    • Introduction
    • Prepare and manage temp-table parameters
      • Data type mapping for temp-table fields
      • Access temp-table array fields
        • Use the flat model
        • Use the array model
    • SQL ResultSet streaming and call-back sequence
      • INPUT ResultSet objects
      • OUTPUT ResultSet objects
        • Order of access for OUTPUT ResultSet objects
        • Close OUTPUT ResultSet objects
      • Result set schemas
    • Pass a TABLE or TABLE-HANDLE as an INPUT parameter
      • Instantiate the INPUT parameter
      • Use com.progress.open4gl.InputResultSet
      • Provide metadata for INPUT TABLE-HANDLE parameters
        • ProResultSetMetaDataImpl class
    • Pass a TABLE or TABLE-HANDLE as an OUTPUT parameter
      • Access TABLE or TABLE-HANDLE parameters as OUTPUT
        • Standard methods in the ProResultSet interface
        • ProResultSet interface extensions to java.sql.ResultSet
      • Temp-table field data type conversion
      • Get meta data for OUTPUT TABLE and TABLE-HANDLE parameters
        • Standard methods in the ProResultSetMetaData class
        • ProResultSetMetaData class extension to java.sql.ResultSetMetaData
    • Pass a TABLE or TABLE-HANDLE as an INPUT-OUTPUT parameter
    • Example Java client passing an SQL ResultSet parameter
Table of Contents

Handle returned values

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  • Last Updated: February 11, 2026
  • 1 minute read
    • OpenEdge
    • Version 13.0
    • Documentation

The Java OpenAPI provides methods to access returned values for:

  • Output parameters
  • The RETURN-VALUE function set by running an ABL non-persistent, persistent, or internal procedure
  • The value returned by an ABL user-defined function

The following sections describe how to return each type of value.

Contents
  • Get OUTPUT parameter values
  • Access RETURN-VALUE function output from procedures
  • Access user-defined function return values
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