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SUMMARY: NESTED | ENUM CONSTANTS | FIELD | METHOD | DETAIL: ENUM CONSTANTS | FIELD | METHOD |
Object Enum<SaveMode> org.apache.spark.sql.SaveMode
public enum SaveMode
SaveMode is used to specify the expected behavior of saving a DataFrame to a data source.
Enum Constant Summary | |
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Append
Append mode means that when saving a DataFrame to a data source, if data/table already exists, contents of the DataFrame are expected to be appended to existing data. |
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ErrorIfExists
ErrorIfExists mode means that when saving a DataFrame to a data source, if data already exists, an exception is expected to be thrown. |
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Ignore
Ignore mode means that when saving a DataFrame to a data source, if data already exists, the save operation is expected to not save the contents of the DataFrame and to not change the existing data. |
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Overwrite
Overwrite mode means that when saving a DataFrame to a data source, if data/table already exists, existing data is expected to be overwritten by the contents of the DataFrame. |
Method Summary | |
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static SaveMode |
valueOf(String name)
Returns the enum constant of this type with the specified name. |
static SaveMode[] |
values()
Returns an array containing the constants of this enum type, in the order they are declared. |
Methods inherited from class Enum |
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compareTo, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf |
Methods inherited from class Object |
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getClass, notify, notifyAll, wait, wait, wait |
Enum Constant Detail |
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public static final SaveMode Append
public static final SaveMode Overwrite
public static final SaveMode ErrorIfExists
public static final SaveMode Ignore
Method Detail |
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public static SaveMode[] values()
for (SaveMode c : SaveMode.values()) System.out.println(c);
public static SaveMode valueOf(String name)
name
- the name of the enum constant to be returned.
IllegalArgumentException
- if this enum type has no constant
with the specified name
NullPointerException
- if the argument is null
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