Class QueryStringUtil

java.lang.Object

org.eclipse.rdf4j.repository.sparql.query.QueryStringUtil

public class QueryStringUtil
extends Object

Utility class to perfom query string manipulations as used in SPARQLTupleQuery, SPARQLGraphQuery and SPARQLBooleanQuery.

Author:

Andreas Schwarte

See Also:

• SPARQLTupleQuery
• SPARQLGraphQuery
• SPARQLBooleanQuery

Constructor Summary

Constructors

Constructor	Description
QueryStringUtil()

Method Summary

Modifier and Type	Method	Description
static StringBuilder	appendValueAsString(StringBuilder sb, Value value)	Converts a value to its SPARQL string representation and appends it to a StringBuilder.
static String	getBooleanQueryString(String queryString, BindingSet bindings)	Retrieve a modified queryString into which all bindings of the given argument are replaced with their value.
static String	getGraphQueryString(String queryString, BindingSet bindings)	Retrieve a modified queryString into which all bindings of the given argument are replaced with their value.
static String	getQueryString(String queryString, BindingSet bindings)	Deprecated. Use getTupleQueryString(String, BindingSet)
static String	getTupleQueryString(String queryString, BindingSet bindings)	Retrieve a modified queryString into which all bindings of the given argument are replaced, with the binding names included in the SELECT clause.
static String	getUpdateString(String queryString, BindingSet bindings)	Retrieve a modified queryString into which all bindings of the given argument are replaced with their value.
static String	valueToString(Value value)	Converts a value to its SPARQL string representation.

Methods inherited from class java.lang.Object

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

Constructor Details

QueryStringUtil

public QueryStringUtil()

Method Details

getQueryString

@Deprecated(since="2.0")
public static String getQueryString(String queryString,
 BindingSet bindings)

Deprecated.

Use getTupleQueryString(String, BindingSet)

Retrieve a modified queryString into which all bindings of the given argument are replaced.

Parameters:

queryString -

bindings -

Returns:

the modified queryString

getTupleQueryString

public static String getTupleQueryString(String queryString,
 BindingSet bindings)

Retrieve a modified queryString into which all bindings of the given argument are replaced, with the binding names included in the SELECT clause.

Parameters:

queryString -

bindings -

Returns:

the modified queryString

getUpdateString

public static String getUpdateString(String queryString,
 BindingSet bindings)

Retrieve a modified queryString into which all bindings of the given argument are replaced with their value.

Parameters:

queryString -

bindings -

Returns:

the modified queryString

getBooleanQueryString

public static String getBooleanQueryString(String queryString,
 BindingSet bindings)

Retrieve a modified queryString into which all bindings of the given argument are replaced with their value.

Parameters:

queryString -

bindings -

Returns:

the modified queryString

getGraphQueryString

public static String getGraphQueryString(String queryString,
 BindingSet bindings)

Retrieve a modified queryString into which all bindings of the given argument are replaced with their value.

Parameters:

queryString -

bindings -

Returns:

the modified queryString

valueToString

public static String valueToString(Value value)

Converts a value to its SPARQL string representation.

Null will be converted to UNDEF (may be used in VALUES only).

Parameters:

value - the value to convert

Returns:

the converted value as a string

appendValueAsString

public static StringBuilder appendValueAsString(StringBuilder sb,
 Value value)

Converts a value to its SPARQL string representation and appends it to a StringBuilder.

Null will be converted to UNDEF (may be used in VALUES only).

Parameters:

sb - StringBuilder to append to

value - the value to convert

Returns:

the provided StringBuilder