Package net.sf.jasperreports.json.data

Class JsonQLDataSource

java.lang.Object

net.sf.jasperreports.engine.data.JRAbstractTextDataSource

net.sf.jasperreports.json.data.JsonQLDataSource

All Implemented Interfaces:

HierarchicalDataSource<JsonQLDataSource>, JsonData<JsonQLDataSource>, RandomAccessDataSource, JRDataSource, JRRewindableDataSource

public class JsonQLDataSource
extends JRAbstractTextDataSource
implements JsonData<JsonQLDataSource>, RandomAccessDataSource

Author:

Narcis Marcu (narcism@users.sourceforge.net)

Field Summary

Fields

Modifier and Type	Field	Description
static final String	EXCEPTION_MESSAGE_KEY_JSON_FIELD_VALUE_NOT_RETRIEVED
static final String	EXCEPTION_MESSAGE_KEY_NO_DATA
static final String	PROPERTY_FIELD_EXPRESSION	Property specifying the JSONQL expression for the dataset field.

Fields inherited from class net.sf.jasperreports.engine.data.JRAbstractTextDataSource

EXCEPTION_MESSAGE_KEY_CANNOT_CONVERT_FIELD_TYPE, EXCEPTION_MESSAGE_KEY_CANNOT_MODIFY_PROPERTIES_AFTER_START, EXCEPTION_MESSAGE_KEY_NODE_NOT_AVAILABLE, EXCEPTION_MESSAGE_KEY_NULL_DOCUMENT, EXCEPTION_MESSAGE_KEY_NULL_SELECT_EXPRESSION, EXCEPTION_MESSAGE_KEY_UNKNOWN_COLUMN_NAME, EXCEPTION_MESSAGE_KEY_UNKNOWN_NUMBER_TYPE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	JsonQLDataSource(com.fasterxml.jackson.databind.JsonNode jacksonJsonTree, String selectExpression)
	JsonQLDataSource(File file)
	JsonQLDataSource(File file, String selectExpression)
	JsonQLDataSource(InputStream jsonInputStream)
	JsonQLDataSource(InputStream jsonInputStream, String selectExpression)
	JsonQLDataSource(JasperReportsContext jasperReportsContext, String jsonSource, String selectExpression)
protected	JsonQLDataSource(JRJsonNode root, String selectExpression)
	JsonQLDataSource(RepositoryContext repositoryContext, String jsonSource, String selectExpression)

Method Summary

Modifier and Type	Method	Description
int	currentIndex()
protected Object	getConvertedValue(JRJsonNode node, JRField jrField)
protected String	getFieldExpression(JRField field)
Object	getFieldValue(JRField jrField)	Gets the field value for the current position.
void	moveFirst()	Moves back to the first element in the data source.
void	moveToRecord(int index)
boolean	next()	Tries to position the cursor on the next element in the data source.
int	recordCount()
JsonQLDataSource	subDataSource()
JsonQLDataSource	subDataSource(String selectExpression)

Methods inherited from class net.sf.jasperreports.engine.data.JRAbstractTextDataSource

convertNumber, convertStringValue, getConvertBean, getDatePattern, getLocale, getNumberPattern, getTextAttributes, getTimeZone, setDatePattern, setLocale, setLocale, setNumberPattern, setTextAttributes, setTextAttributes, setTimeZone, setTimeZone

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

EXCEPTION_MESSAGE_KEY_NO_DATA

public static final String EXCEPTION_MESSAGE_KEY_NO_DATA

See Also:

• Constant Field Values

EXCEPTION_MESSAGE_KEY_JSON_FIELD_VALUE_NOT_RETRIEVED

public static final String EXCEPTION_MESSAGE_KEY_JSON_FIELD_VALUE_NOT_RETRIEVED

See Also:

• Constant Field Values

PROPERTY_FIELD_EXPRESSION

public static final String PROPERTY_FIELD_EXPRESSION

Property specifying the JSONQL expression for the dataset field.

See Also:

• Constant Field Values

Constructor Details

JsonQLDataSource

public JsonQLDataSource(File file,
 String selectExpression)
                 throws JRException

Throws:

JRException

JsonQLDataSource

public JsonQLDataSource(File file)
                 throws JRException

Throws:

JRException

JsonQLDataSource

public JsonQLDataSource(InputStream jsonInputStream,
 String selectExpression)
                 throws JRException

Throws:

JRException

JsonQLDataSource

public JsonQLDataSource(InputStream jsonInputStream)
                 throws JRException

Throws:

JRException

JsonQLDataSource

public JsonQLDataSource(JasperReportsContext jasperReportsContext,
 String jsonSource,
 String selectExpression)
                 throws JRException

Throws:

JRException

JsonQLDataSource

public JsonQLDataSource(RepositoryContext repositoryContext,
 String jsonSource,
 String selectExpression)
                 throws JRException

Throws:

JRException

JsonQLDataSource

protected JsonQLDataSource(com.fasterxml.jackson.databind.JsonNode jacksonJsonTree,
 String selectExpression)
                    throws JRException

Throws:

JRException

JsonQLDataSource

protected JsonQLDataSource(JRJsonNode root,
 String selectExpression)
                    throws JRException

Throws:

JRException

Method Details

moveFirst

public void moveFirst()
               throws JRException

Description copied from interface: JRRewindableDataSource

Moves back to the first element in the data source.

Specified by:

moveFirst in interface JRRewindableDataSource

Throws:

JRException

next

public boolean next()
             throws JRException

Description copied from interface: JRDataSource

Tries to position the cursor on the next element in the data source.

Specified by:

next in interface JRDataSource

Returns:

true if there is a next record, false otherwise

Throws:

JRException - if any error occurs while trying to move to the next element

recordCount

public int recordCount()

Specified by:

recordCount in interface RandomAccessDataSource

currentIndex

public int currentIndex()

Specified by:

currentIndex in interface RandomAccessDataSource

moveToRecord

public void moveToRecord(int index)
                  throws NoRecordAtIndexException

Specified by:

moveToRecord in interface RandomAccessDataSource

Throws:

NoRecordAtIndexException

getFieldValue

public Object getFieldValue(JRField jrField)
                     throws JRException

Description copied from interface: JRDataSource

Gets the field value for the current position.

Specified by:

getFieldValue in interface JRDataSource

Returns:

an object containing the field value. The object type must be the field object type.

Throws:

JRException

subDataSource

public JsonQLDataSource subDataSource()
                               throws JRException

Specified by:

subDataSource in interface HierarchicalDataSource<JsonQLDataSource>

Throws:

JRException

subDataSource

public JsonQLDataSource subDataSource(String selectExpression)
                               throws JRException

Specified by:

subDataSource in interface HierarchicalDataSource<JsonQLDataSource>

Throws:

JRException

getConvertedValue

protected Object getConvertedValue(JRJsonNode node,
 JRField jrField)
                            throws JRException

Throws:

JRException

getFieldExpression

protected String getFieldExpression(JRField field)