Package io.trino.operator.scalar.json

Class JsonInputFunctions

java.lang.Object

io.trino.operator.scalar.json.JsonInputFunctions

public final class JsonInputFunctions
extends Object

Read string input as JSON.

These functions are used by JSON_EXISTS, JSON_VALUE and JSON_QUERY functions for parsing the JSON input arguments and applicable JSON path parameters.

If the error handling strategy of the enclosing JSON function is ERROR ON ERROR, these input functions throw exception in case of parse error. Otherwise, the parse error is suppressed, and a marker value JSON_ERROR is returned, so that the enclosing function can handle the error accordingly to its error handling strategy (e.g. return a default value).

A duplicate key in a JSON object does not cause error. The resulting object has one entry with that key, chosen arbitrarily. This behavior fulfills the 'WITHOUT UNIQUE KEYS' option. (SQL standard p. 692)

Field Summary

Fields

Modifier and Type	Field	Description
static final String	VARBINARY_TO_JSON
static final String	VARBINARY_UTF16_TO_JSON
static final String	VARBINARY_UTF32_TO_JSON
static final String	VARBINARY_UTF8_TO_JSON
static final String	VARCHAR_TO_JSON

Method Summary

Modifier and Type	Method	Description
static com.fasterxml.jackson.databind.JsonNode	varbinaryToJson(io.airlift.slice.Slice inputExpression, boolean failOnError)
static com.fasterxml.jackson.databind.JsonNode	varbinaryUtf16ToJson(io.airlift.slice.Slice inputExpression, boolean failOnError)
static com.fasterxml.jackson.databind.JsonNode	varbinaryUtf32ToJson(io.airlift.slice.Slice inputExpression, boolean failOnError)
static com.fasterxml.jackson.databind.JsonNode	varbinaryUtf8ToJson(io.airlift.slice.Slice inputExpression, boolean failOnError)
static com.fasterxml.jackson.databind.JsonNode	varcharToJson(io.airlift.slice.Slice inputExpression, boolean failOnError)

Methods inherited from class java.lang.Object

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

Field Details

VARCHAR_TO_JSON

public static final String VARCHAR_TO_JSON

See Also:

• Constant Field Values

VARBINARY_TO_JSON

public static final String VARBINARY_TO_JSON

See Also:

• Constant Field Values

VARBINARY_UTF8_TO_JSON

public static final String VARBINARY_UTF8_TO_JSON

See Also:

• Constant Field Values

VARBINARY_UTF16_TO_JSON

public static final String VARBINARY_UTF16_TO_JSON

See Also:

• Constant Field Values

VARBINARY_UTF32_TO_JSON

public static final String VARBINARY_UTF32_TO_JSON

See Also:

• Constant Field Values

Method Details

varcharToJson

public static com.fasterxml.jackson.databind.JsonNode varcharToJson(io.airlift.slice.Slice inputExpression,
 boolean failOnError)

varbinaryToJson

public static com.fasterxml.jackson.databind.JsonNode varbinaryToJson(io.airlift.slice.Slice inputExpression,
 boolean failOnError)

varbinaryUtf8ToJson

public static com.fasterxml.jackson.databind.JsonNode varbinaryUtf8ToJson(io.airlift.slice.Slice inputExpression,
 boolean failOnError)

varbinaryUtf16ToJson

public static com.fasterxml.jackson.databind.JsonNode varbinaryUtf16ToJson(io.airlift.slice.Slice inputExpression,
 boolean failOnError)

varbinaryUtf32ToJson

public static com.fasterxml.jackson.databind.JsonNode varbinaryUtf32ToJson(io.airlift.slice.Slice inputExpression,
 boolean failOnError)