Enum BigQueryIO.Write.WriteDisposition
- java.lang.Object
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- java.lang.Enum<BigQueryIO.Write.WriteDisposition>
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- org.apache.beam.sdk.io.gcp.bigquery.BigQueryIO.Write.WriteDisposition
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Comparable<BigQueryIO.Write.WriteDisposition>
- Enclosing class:
- BigQueryIO.Write<T>
public static enum BigQueryIO.Write.WriteDisposition extends java.lang.Enum<BigQueryIO.Write.WriteDisposition>
An enumeration type for the BigQuery write disposition strings.
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Enum Constant Summary
Enum Constants Enum Constant Description WRITE_APPEND
Specifies that rows may be appended to an existing table.WRITE_EMPTY
Specifies that the output table must be empty.WRITE_TRUNCATE
Specifies that write should replace a table.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static BigQueryIO.Write.WriteDisposition
valueOf(java.lang.String name)
Returns the enum constant of this type with the specified name.static BigQueryIO.Write.WriteDisposition[]
values()
Returns an array containing the constants of this enum type, in the order they are declared.
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Enum Constant Detail
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WRITE_TRUNCATE
public static final BigQueryIO.Write.WriteDisposition WRITE_TRUNCATE
Specifies that write should replace a table.The replacement may occur in multiple steps - for instance by first removing the existing table, then creating a replacement, then filling it in. This is not an atomic operation, and external programs may see the table in any of these intermediate steps.
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WRITE_APPEND
public static final BigQueryIO.Write.WriteDisposition WRITE_APPEND
Specifies that rows may be appended to an existing table.
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WRITE_EMPTY
public static final BigQueryIO.Write.WriteDisposition WRITE_EMPTY
Specifies that the output table must be empty. This is the default behavior.If the output table is not empty, the write fails at runtime.
This check may occur long before data is written, and does not guarantee exclusive access to the table. If two programs are run concurrently, each specifying the same output table and a
BigQueryIO.Write.WriteDisposition
ofWRITE_EMPTY
, it is possible for both to succeed.
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Method Detail
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values
public static BigQueryIO.Write.WriteDisposition[] values()
Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:for (BigQueryIO.Write.WriteDisposition c : BigQueryIO.Write.WriteDisposition.values()) System.out.println(c);
- Returns:
- an array containing the constants of this enum type, in the order they are declared
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valueOf
public static BigQueryIO.Write.WriteDisposition valueOf(java.lang.String name)
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)- Parameters:
name
- the name of the enum constant to be returned.- Returns:
- the enum constant with the specified name
- Throws:
java.lang.IllegalArgumentException
- if this enum type has no constant with the specified namejava.lang.NullPointerException
- if the argument is null
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