org.apache.sling.commons.json.jcr

Class JsonItemWriter

java.lang.Object

org.apache.sling.commons.json.jcr.JsonItemWriter

public class JsonItemWriter
extends Object

Dumps JCR Items as JSON data. The dump methods are threadsafe.

Field Summary

Fields

Modifier and Type	Field and Description
static Locale	DATE_FORMAT_LOCALE Used to format date values
static String	ECMA_DATE_FORMAT Used to format date values

Constructor Summary

Constructors

Constructor and Description
JsonItemWriter(Set<String> propertyNamesToIgnore) Create a JsonItemWriter

Method Summary

Modifier and Type	Method and Description
void	dump(javax.jcr.NodeIterator it, Writer out) Dump all Nodes of given NodeIterator in JSON
protected void	dump(javax.jcr.Node node, JSONWriter w, int currentRecursionLevel, int maxRecursionLevels) Dump given node in JSON, optionally recursing into its child nodes
void	dump(javax.jcr.Node node, Writer w, int maxRecursionLevels) Dump given node in JSON, optionally recursing into its child nodes
void	dump(javax.jcr.Node node, Writer w, int maxRecursionLevels, boolean tidy) Dump given node in JSON, optionally recursing into its child nodes
void	dump(javax.jcr.Property p, Writer w) Dump given property in JSON
protected void	dumpSingleNode(javax.jcr.Node n, JSONWriter w, int currentRecursionLevel, int maxRecursionLevels) Dump a single node
protected void	dumpValue(JSONWriter w, javax.jcr.Value v) Writes the given value to the JSON writer.
static String	format(Calendar date)
protected boolean	recursionLevelActive(int currentRecursionLevel, int maxRecursionLevels) true if the current recursion level is active
protected void	writeProperty(JSONWriter w, javax.jcr.Property p) Write a single property

Methods inherited from class java.lang.Object

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

Field Detail

ECMA_DATE_FORMAT

public static final String ECMA_DATE_FORMAT

Used to format date values

See Also:

Constant Field Values

DATE_FORMAT_LOCALE

public static final Locale DATE_FORMAT_LOCALE

Used to format date values

Constructor Detail

JsonItemWriter

public JsonItemWriter(Set<String> propertyNamesToIgnore)

Create a JsonItemWriter

Parameters:

propertyNamesToIgnore - if not null, a property having a name from this set of values is ignored. TODO we should use a filtering interface to make the selection of which Nodes and Properties to dump more flexible.

Method Detail

dump

public void dump(javax.jcr.NodeIterator it,
                 Writer out)
          throws javax.jcr.RepositoryException,
                 JSONException

Dump all Nodes of given NodeIterator in JSON

Throws:

JSONException

javax.jcr.RepositoryException

dump

public void dump(javax.jcr.Node node,
                 Writer w,
                 int maxRecursionLevels)
          throws javax.jcr.RepositoryException,
                 JSONException

Dump given node in JSON, optionally recursing into its child nodes

Throws:

javax.jcr.RepositoryException

JSONException

dump

public void dump(javax.jcr.Node node,
                 Writer w,
                 int maxRecursionLevels,
                 boolean tidy)
          throws javax.jcr.RepositoryException,
                 JSONException

Dump given node in JSON, optionally recursing into its child nodes

Parameters:

tidy - if true the json dump is nicely formatted

Throws:

javax.jcr.RepositoryException

JSONException

dump

public void dump(javax.jcr.Property p,
                 Writer w)
          throws JSONException,
                 javax.jcr.ValueFormatException,
                 javax.jcr.RepositoryException

Dump given property in JSON

Throws:

JSONException

javax.jcr.ValueFormatException

javax.jcr.RepositoryException

dump

protected void dump(javax.jcr.Node node,
                    JSONWriter w,
                    int currentRecursionLevel,
                    int maxRecursionLevels)
             throws javax.jcr.RepositoryException,
                    JSONException

Dump given node in JSON, optionally recursing into its child nodes

Throws:

javax.jcr.RepositoryException

JSONException

dumpSingleNode

protected void dumpSingleNode(javax.jcr.Node n,
                              JSONWriter w,
                              int currentRecursionLevel,
                              int maxRecursionLevels)
                       throws javax.jcr.RepositoryException,
                              JSONException

Dump a single node

Throws:

javax.jcr.RepositoryException

JSONException

recursionLevelActive

protected boolean recursionLevelActive(int currentRecursionLevel,
                                       int maxRecursionLevels)

true if the current recursion level is active

writeProperty

protected void writeProperty(JSONWriter w,
                             javax.jcr.Property p)
                      throws javax.jcr.ValueFormatException,
                             javax.jcr.RepositoryException,
                             JSONException

Write a single property

Throws:

javax.jcr.ValueFormatException

javax.jcr.RepositoryException

JSONException

dumpValue

protected void dumpValue(JSONWriter w,
                         javax.jcr.Value v)
                  throws javax.jcr.ValueFormatException,
                         IllegalStateException,
                         javax.jcr.RepositoryException,
                         JSONException

Writes the given value to the JSON writer. currently the following conversions are done:

JSR Property Type	JSON Value Type
BINARY	always 0 as long
DATE	converted date string as defined by ECMA
BOOLEAN	boolean
LONG	long
DOUBLE	double
all other	string

¹ Currently not implemented and uses 0 as default.

Parameters:

w - json writer

v - value to dump

Throws:

javax.jcr.ValueFormatException

IllegalStateException

javax.jcr.RepositoryException

JSONException

format

public static String format(Calendar date)