net.windward.datasource.json

Class JsonDataSource.JsonDataNode

java.lang.Object

net.windward.datasource.abstract_datasource.AbstractDataSourceNode

net.windward.datasource.json.JsonDataSource.JsonDataNode

All Implemented Interfaces:

DataSourceNode

Enclosing class:

JsonDataSource

public class JsonDataSource.JsonDataNode
extends AbstractDataSourceNode

Constructor Summary

Constructors

Constructor and Description
JsonDataNode(AbstractDataSource abstractDataSource)
JsonDataNode(AbstractDataSource abstractDataSource, IDataSourceResultRow row) JsonDataNode constructor: set query and doc

Method Summary

Modifier and Type	Method and Description
void	close() We are done with this node.
java.io.InputStream	getBitmap(OutTag tag, DataSourceNode[] stack, IMacroState state) Called when tag is of type BITMAP.
int	getQueryMode(java.lang.String select, BaseTag tag) Returns the mode of a query.
boolean	isSelect(java.lang.String select, boolean textIsNode) Returns true if the passed in string is believed to be a select.

Methods inherited from class net.windward.datasource.abstract_datasource.AbstractDataSourceNode

addQuery, addSet, addSwitch, drillDownToVal, endSwitch, evaluate, getCursor, getData, getDataSourceProvider, getDatasourceState, getEquationData, getImport, getImport, getIterator, getLink, getNativeVariable, getOut, getOutStream, getValue, getVariableValue, isCase, isExistingNode, isIf, isLiteralDataSourceNode, iterator, parse

Methods inherited from class java.lang.Object

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

Constructor Detail

JsonDataNode

public JsonDataNode(AbstractDataSource abstractDataSource,
                    IDataSourceResultRow row)

JsonDataNode constructor: set query and doc

Parameters:

row -

JsonDataNode

public JsonDataNode(AbstractDataSource abstractDataSource)

Method Detail

isSelect

public boolean isSelect(java.lang.String select,
                        boolean textIsNode)

Returns true if the passed in string is believed to be a select. false otherwise.

Parameters:

select - Determine if this string is a select.

textIsNode - true if plain text is a nod. false if it's a value.

Returns:

true if believed to be a select. false otherwise.

close

public void close()
           throws DataSourceException

Description copied from interface: DataSourceNode

We are done with this node. Used to close any resources opened by this object.

Specified by:

close in interface DataSourceNode

Overrides:

close in class AbstractDataSourceNode

Throws:

DataSourceException - Could not retrieve the data.

getQueryMode

public int getQueryMode(java.lang.String select,
                        BaseTag tag)
                 throws DataSourceException

Description copied from interface: DataSourceNode

Returns the mode of a query. It is one of the BaseTag.MODE_* values. This tells the underlying provider if the passed in select is a select=, evaluate=, or value=.

Parameters:

select - The query.

tag - The tag this select is for. This may be null.

Returns:

The mode.

Throws:

DataSourceException

getBitmap

public java.io.InputStream getBitmap(OutTag tag,
                                     DataSourceNode[] stack,
                                     IMacroState state)
                              throws DataSourceException

Description copied from interface: DataSourceNode

Called when tag is of type BITMAP. Returns the fileimage of the bitmap from the datasource. Return a 0 length array for an empty bitmap. Return null if the requested node does not exist.

Specified by:

getBitmap in interface DataSourceNode

Overrides:

getBitmap in class AbstractDataSourceNode

Parameters:

tag - The values that identify the datasource node to read.

stack - The stack of forEach loops in at this point. Node [0] is the root document node so this will always have length of at least 1.

state - macrostate of the report

Returns:

A file image of the referenced bitmap.

Throws:

DataSourceException - Could not retrieve the data. Generally wraps a SqlException or XpathException.