public abstract class Parser<T>Parser is the parsing superclass, used to take wire format data types and convert them specifically to desired byte types. Each subclass is assigned with a specific type.
Type Parameter
| Name | Description |
| T |
Static Fields
PG_EPOCH_DAYS
public static final long PG_EPOCH_DAYS| Type | Description |
| long |
PG_EPOCH_SECONDS
public static final long PG_EPOCH_SECONDS| Type | Description |
| long |
UTF8
protected static final Charset UTF8| Type | Description |
| Charset |
Static Methods
create(ResultSet result, Type type, int columnarPosition)
public static Parser<?> create(ResultSet result, Type type, int columnarPosition)Factory method for parsing given a result set, for the specified column.
| Name | Description |
| result | com.google.cloud.spanner.ResultSetThe result set object containing all data retrieved. |
| type | com.google.cloud.spanner.TypeThe type of the data to be parsed. |
| columnarPosition | intColumn from the result to be parsed. |
| Type | Description |
| Parser<?> | The parser object for the designated data type. |
create(Object result, Type.Code typeCode)
protected static Parser<?> create(Object result, Type.Code typeCode)Factory method for parsing generic data given a specified type.
| Name | Description |
| result | ObjectThe generic object to parse. |
| typeCode | com.google.cloud.spanner.Type.CodeThe type of the object to be parsed. |
| Type | Description |
| Parser<?> | The parser object for the designated data type. |
create(Set<Integer> guessTypes, byte[] item, int oidType, Parser.FormatCode formatCode)
public static Parser<?> create(Set<Integer> guessTypes, byte[] item, int oidType, Parser.FormatCode formatCode)Factory method to create a Parser subtype with a designated type from a byte array.
| Name | Description |
| guessTypes | Set<Integer>The OIDs of the types that may be 'guessed' based on the input value |
| item | byte[]The data to be parsed |
| oidType | intThe type of the designated data |
| formatCode | Parser.FormatCodeThe format of the data to be parsed |
| Type | Description |
| Parser<?> | The parser object for the designated data type. |
toOid(Type type)
public static int toOid(Type type)Translates the given Cloud Spanner Type to a PostgreSQL OID constant.
| Name | Description |
| type | com.google.cloud.spanner.Typethe type to translate |
| Type | Description |
| int | The OID constant value for the type |
Constructors
Parser()
public Parser()Fields
item
protected T item| Type | Description |
| T |
Methods
binaryParse()
protected abstract byte[] binaryParse()Used to parse data type onto binary. Override this to change binary representation.
| Type | Description |
| byte[] |
bind(Statement.Builder statementBuilder, String name)
public abstract void bind(Statement.Builder statementBuilder, String name)| Name | Description |
| statementBuilder | com.google.cloud.spanner.Statement.Builder |
| name | String |
getItem()
public T getItem()Returns the item helder by this parser.
| Type | Description |
| T |
parse(ProxyServer.DataFormat format)
public byte[] parse(ProxyServer.DataFormat format)Parses data based on specified data format (Spanner, text, or binary)
| Name | Description |
| format | ProxyServer.DataFormatOne of possible DataFormat types to parse data. |
| Type | Description |
| byte[] | Byte format version of the input object. |
spannerBinaryParse()
protected byte[] spannerBinaryParse()| Type | Description |
| byte[] | Binary representation of spanner string data. |
spannerParse()
protected String spannerParse()Used to parse data type onto spanner format. Override this to change spanner representation.
| Type | Description |
| String | Spanner string representation of data. |
stringBinaryParse()
protected byte[] stringBinaryParse()| Type | Description |
| byte[] | Binary representation of string data. |
stringParse()
public abstract String stringParse()Used to parse data type into string. Override this to change the string representation.
| Type | Description |
| String | String representation of data. |