net.sf.jasperreports.engine.data

Class JsonQLDataSource

java.lang.Object

net.sf.jasperreports.engine.data.JRAbstractTextDataSource

net.sf.jasperreports.engine.data.JsonQLDataSource

All Implemented Interfaces:

JsonData, JRDataSource, JRRewindableDataSource

public class JsonQLDataSource
extends JRAbstractTextDataSource
implements JsonData

Author:

Narcis Marcu (narcism@users.sourceforge.net)

Field Summary

Fields

Modifier and Type	Field and Description
static String	EXCEPTION_MESSAGE_KEY_JSON_FIELD_VALUE_NOT_RETRIEVED
static String	EXCEPTION_MESSAGE_KEY_NO_DATA
static 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 and Description
	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)
protected	JsonQLDataSource(com.fasterxml.jackson.databind.JsonNode jacksonJsonTree, String selectExpression)

Method Summary

Methods

Modifier and Type	Method and Description
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.
boolean	next() Tries to position the cursor on the next element in the data source.
JsonQLDataSource	subDataSource()
JsonQLDataSource	subDataSource(String selectExpression)

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

convertNumber, convertStringValue, getConvertBean, getDatePattern, getFormattedDate, getFormattedNumber, 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 Detail

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 Detail

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

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 Detail

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

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 JsonData

Throws:

JRException

subDataSource

public JsonQLDataSource subDataSource(String selectExpression)
                               throws JRException

Specified by:

subDataSource in interface JsonData

Throws:

JRException

getConvertedValue

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

Throws:

JRException

getFieldExpression

protected String getFieldExpression(JRField field)