com.gpudb.protocol

Class RawUpdateRecordsRequest

java.lang.Object

com.gpudb.protocol.RawUpdateRecordsRequest

All Implemented Interfaces:

org.apache.avro.generic.GenericContainer, org.apache.avro.generic.IndexedRecord

public class RawUpdateRecordsRequest
extends Object
implements org.apache.avro.generic.IndexedRecord

A set of parameters for GPUdb.updateRecordsRaw.

Runs multiple predicate-based updates in a single call. With the list of given expressions, any matching record's column values will be updated as provided in newValuesMaps. There is also an optional 'upsert' capability where if a particular predicate doesn't match any existing record, then a new record can be inserted.

Note that this operation can only be run on an original table and not on a result view.

This operation can update primary key values. By default only 'pure primary key' predicates are allowed when updating primary key values. If the primary key for a table is the column 'attr1', then the operation will only accept predicates of the form: "attr1 == 'foo'" if the attr1 column is being updated. For a composite primary key (e.g. columns 'attr1' and 'attr2') then this operation will only accept predicates of the form: "(attr1 == 'foo') and (attr2 == 'bar')". Meaning, all primary key columns must appear in an equality predicate in the expressions. Furthermore each 'pure primary key' predicate must be unique within a given request. These restrictions can be removed by utilizing some available options through options.

The UPDATE_ON_EXISTING_PK option specifies the record primary key collision policy for tables with a primary key, while IGNORE_EXISTING_PK specifies the record primary key collision error-suppression policy when those collisions result in the update being rejected. Both are ignored on tables with no primary key.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RawUpdateRecordsRequest.Options A set of string constants for the RawUpdateRecordsRequest parameter options.
static class	RawUpdateRecordsRequest.RecordEncoding A set of string constants for the RawUpdateRecordsRequest parameter recordEncoding.

Constructor Summary

Constructors

Constructor and Description
RawUpdateRecordsRequest() Constructs a RawUpdateRecordsRequest object with default parameters.
RawUpdateRecordsRequest(String tableName, List<String> expressions, List<Map<String,String>> newValuesMaps, List<ByteBuffer> recordsToInsert, List<String> recordsToInsertStr, String recordEncoding, Map<String,String> options) Constructs a RawUpdateRecordsRequest object with the specified parameters.
RawUpdateRecordsRequest(String tableName, List<String> expressions, List<Map<String,String>> newValuesMaps, List<ByteBuffer> recordsToInsert, Map<String,String> options) Constructs a RawUpdateRecordsRequest object with the specified parameters.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
Object	get(int index) This method supports the Avro framework and is not intended to be called directly by the user.
static org.apache.avro.Schema	getClassSchema() This method supports the Avro framework and is not intended to be called directly by the user.
List<String>	getExpressions() A list of the actual predicates, one for each update; format should follow the guidelines here.
List<Map<String,String>>	getNewValuesMaps() List of new values for the matching records.
Map<String,String>	getOptions() Optional parameters.
String	getRecordEncoding() Identifies which of recordsToInsert and recordsToInsertStr should be used.
List<ByteBuffer>	getRecordsToInsert() An *optional* list of new binary-avro encoded records to insert, one for each update.
List<String>	getRecordsToInsertStr() An optional list of JSON encoded objects to insert, one for each update, to be added if the particular update did not match any objects.
org.apache.avro.Schema	getSchema() This method supports the Avro framework and is not intended to be called directly by the user.
String	getTableName() Name of table to be updated, in [schema_name.]table_name format, using standard	int	hashCode()
void	put(int index, Object value) This method supports the Avro framework and is not intended to be called directly by the user.
RawUpdateRecordsRequest	setExpressions(List<String> expressions) A list of the actual predicates, one for each update; format should follow the guidelines here.
RawUpdateRecordsRequest	setNewValuesMaps(List<Map<String,String>> newValuesMaps) List of new values for the matching records.
RawUpdateRecordsRequest	setOptions(Map<String,String> options) Optional parameters.
RawUpdateRecordsRequest	setRecordEncoding(String recordEncoding) Identifies which of recordsToInsert and recordsToInsertStr should be used.
RawUpdateRecordsRequest	setRecordsToInsert(List<ByteBuffer> recordsToInsert) An *optional* list of new binary-avro encoded records to insert, one for each update.
RawUpdateRecordsRequest	setRecordsToInsertStr(List<String> recordsToInsertStr) An optional list of JSON encoded objects to insert, one for each update, to be added if the particular update did not match any objects.
RawUpdateRecordsRequest	setTableName(String tableName) Name of table to be updated, in [schema_name.]table_name format, using standard	String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

RawUpdateRecordsRequest

public RawUpdateRecordsRequest()

Constructs a RawUpdateRecordsRequest object with default parameters.

RawUpdateRecordsRequest

public RawUpdateRecordsRequest(String tableName,
                               List<String> expressions,
                               List<Map<String,String>> newValuesMaps,
                               List<ByteBuffer> recordsToInsert,
                               Map<String,String> options)

Constructs a RawUpdateRecordsRequest object with the specified parameters.

Parameters:

tableName - Name of table to be updated, in [schema_name.]table_name format, using standard name resolution rules. Must be a currently existing table and not a view.

expressions - A list of the actual predicates, one for each update; format should follow the guidelines here.

newValuesMaps - List of new values for the matching records. Each element is a map with (key, value) pairs where the keys are the names of the columns whose values are to be updated; the values are the new values. The number of elements in the list should match the length of expressions.

recordsToInsert - An *optional* list of new binary-avro encoded records to insert, one for each update. If one of expressions does not yield a matching record to be updated, then the corresponding element from this list will be added to the table. The default value is an empty List.

options - Optional parameters.

• GLOBAL_EXPRESSION: An optional global expression to reduce the search space of the predicates listed in expressions. The default value is ''.
• BYPASS_SAFETY_CHECKS: When set to TRUE, all predicates are available for primary key updates. Keep in mind that it is possible to destroy data in this case, since a single predicate may match multiple objects (potentially all of records of a table), and then updating all of those records to have the same primary key will, due to the primary key uniqueness constraints, effectively delete all but one of those updated records. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• UPDATE_ON_EXISTING_PK: Specifies the record collision policy for updating a table with a primary key. There are two ways that a record collision can occur. The first is an "update collision", which happens when the update changes the value of the updated record's primary key, and that new primary key already exists as the primary key of another record in the table. The second is an "insert collision", which occurs when a given filter in expressions finds no records to update, and the alternate insert record given in recordsToInsert (or recordsToInsertStr) contains a primary key matching that of an existing record in the table. If UPDATE_ON_EXISTING_PK is set to TRUE, "update collisions" will result in the existing record collided into being removed and the record updated with values specified in newValuesMaps taking its place; "insert collisions" will result in the collided-into record being updated with the values in recordsToInsert/recordsToInsertStr (if given). If set to FALSE, the existing collided-into record will remain unchanged, while the update will be rejected and the error handled as determined by IGNORE_EXISTING_PK. If the specified table does not have a primary key, then this option has no effect. Supported values:
  • TRUE: Overwrite the collided-into record when updating a record's primary key or inserting an alternate record causes a primary key collision between the record being updated/inserted and another existing record in the table
  • FALSE: Reject updates which cause primary key collisions between the record being updated/inserted and an existing record in the table
  The default value is FALSE.
• IGNORE_EXISTING_PK: Specifies the record collision error-suppression policy for updating a table with a primary key, only used when primary key record collisions are rejected (UPDATE_ON_EXISTING_PK is FALSE). If set to TRUE, any record update that is rejected for resulting in a primary key collision with an existing table record will be ignored with no error generated. If FALSE, the rejection of any update for resulting in a primary key collision will cause an error to be reported. If the specified table does not have a primary key or if UPDATE_ON_EXISTING_PK is TRUE, then this option has no effect. Supported values:
  • TRUE: Ignore updates that result in primary key collisions with existing records
  • FALSE: Treat as errors any updates that result in primary key collisions with existing records
  The default value is FALSE.
• UPDATE_PARTITION: Force qualifying records to be deleted and reinserted so their partition membership will be reevaluated. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• TRUNCATE_STRINGS: If set to TRUE, any strings which are too long for their charN string fields will be truncated to fit. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• USE_EXPRESSIONS_IN_NEW_VALUES_MAPS: When set to TRUE, all new values in newValuesMaps are considered as expression values. When set to FALSE, all new values in newValuesMaps are considered as constants. NOTE: When TRUE, string constants will need to be quoted to avoid being evaluated as expressions. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• RECORD_ID: ID of a single record to be updated (returned in the call to GPUdb.insertRecordsRaw or GPUdb.getRecordsFromCollectionRaw).

The default value is an empty Map.

RawUpdateRecordsRequest

public RawUpdateRecordsRequest(String tableName,
                               List<String> expressions,
                               List<Map<String,String>> newValuesMaps,
                               List<ByteBuffer> recordsToInsert,
                               List<String> recordsToInsertStr,
                               String recordEncoding,
                               Map<String,String> options)

Constructs a RawUpdateRecordsRequest object with the specified parameters.

Parameters:

tableName - Name of table to be updated, in [schema_name.]table_name format, using standard name resolution rules. Must be a currently existing table and not a view.

expressions - A list of the actual predicates, one for each update; format should follow the guidelines here.

newValuesMaps - List of new values for the matching records. Each element is a map with (key, value) pairs where the keys are the names of the columns whose values are to be updated; the values are the new values. The number of elements in the list should match the length of expressions.

recordsToInsert - An *optional* list of new binary-avro encoded records to insert, one for each update. If one of expressions does not yield a matching record to be updated, then the corresponding element from this list will be added to the table. The default value is an empty List.

recordsToInsertStr - An optional list of JSON encoded objects to insert, one for each update, to be added if the particular update did not match any objects. The default value is an empty List.

recordEncoding - Identifies which of recordsToInsert and recordsToInsertStr should be used. Supported values:

• BINARY
• JSON

The default value is BINARY.

options - Optional parameters.

• GLOBAL_EXPRESSION: An optional global expression to reduce the search space of the predicates listed in expressions. The default value is ''.
• BYPASS_SAFETY_CHECKS: When set to TRUE, all predicates are available for primary key updates. Keep in mind that it is possible to destroy data in this case, since a single predicate may match multiple objects (potentially all of records of a table), and then updating all of those records to have the same primary key will, due to the primary key uniqueness constraints, effectively delete all but one of those updated records. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• UPDATE_ON_EXISTING_PK: Specifies the record collision policy for updating a table with a primary key. There are two ways that a record collision can occur. The first is an "update collision", which happens when the update changes the value of the updated record's primary key, and that new primary key already exists as the primary key of another record in the table. The second is an "insert collision", which occurs when a given filter in expressions finds no records to update, and the alternate insert record given in recordsToInsert (or recordsToInsertStr) contains a primary key matching that of an existing record in the table. If UPDATE_ON_EXISTING_PK is set to TRUE, "update collisions" will result in the existing record collided into being removed and the record updated with values specified in newValuesMaps taking its place; "insert collisions" will result in the collided-into record being updated with the values in recordsToInsert/recordsToInsertStr (if given). If set to FALSE, the existing collided-into record will remain unchanged, while the update will be rejected and the error handled as determined by IGNORE_EXISTING_PK. If the specified table does not have a primary key, then this option has no effect. Supported values:
  • TRUE: Overwrite the collided-into record when updating a record's primary key or inserting an alternate record causes a primary key collision between the record being updated/inserted and another existing record in the table
  • FALSE: Reject updates which cause primary key collisions between the record being updated/inserted and an existing record in the table
  The default value is FALSE.
• IGNORE_EXISTING_PK: Specifies the record collision error-suppression policy for updating a table with a primary key, only used when primary key record collisions are rejected (UPDATE_ON_EXISTING_PK is FALSE). If set to TRUE, any record update that is rejected for resulting in a primary key collision with an existing table record will be ignored with no error generated. If FALSE, the rejection of any update for resulting in a primary key collision will cause an error to be reported. If the specified table does not have a primary key or if UPDATE_ON_EXISTING_PK is TRUE, then this option has no effect. Supported values:
  • TRUE: Ignore updates that result in primary key collisions with existing records
  • FALSE: Treat as errors any updates that result in primary key collisions with existing records
  The default value is FALSE.
• UPDATE_PARTITION: Force qualifying records to be deleted and reinserted so their partition membership will be reevaluated. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• TRUNCATE_STRINGS: If set to TRUE, any strings which are too long for their charN string fields will be truncated to fit. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• USE_EXPRESSIONS_IN_NEW_VALUES_MAPS: When set to TRUE, all new values in newValuesMaps are considered as expression values. When set to FALSE, all new values in newValuesMaps are considered as constants. NOTE: When TRUE, string constants will need to be quoted to avoid being evaluated as expressions. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• RECORD_ID: ID of a single record to be updated (returned in the call to GPUdb.insertRecordsRaw or GPUdb.getRecordsFromCollectionRaw).

The default value is an empty Map.

Method Detail

getClassSchema

public static org.apache.avro.Schema getClassSchema()

This method supports the Avro framework and is not intended to be called directly by the user.

Returns:

The schema for the class.

getTableName

public String getTableName()

Name of table to be updated, in [schema_name.]table_name format, using standard name resolution rules. Must be a currently existing table and not a view.

Returns:

The current value of tableName.

setTableName

public RawUpdateRecordsRequest setTableName(String tableName)

Name of table to be updated, in [schema_name.]table_name format, using standard name resolution rules. Must be a currently existing table and not a view.

Parameters:

tableName - The new value for tableName.

Returns:

this to mimic the builder pattern.

getExpressions

public List<String> getExpressions()

A list of the actual predicates, one for each update; format should follow the guidelines here.

Returns:

The current value of expressions.

setExpressions

public RawUpdateRecordsRequest setExpressions(List<String> expressions)

A list of the actual predicates, one for each update; format should follow the guidelines here.

Parameters:

expressions - The new value for expressions.

Returns:

this to mimic the builder pattern.

getNewValuesMaps

public List<Map<String,String>> getNewValuesMaps()

List of new values for the matching records. Each element is a map with (key, value) pairs where the keys are the names of the columns whose values are to be updated; the values are the new values. The number of elements in the list should match the length of expressions.

Returns:

The current value of newValuesMaps.

setNewValuesMaps

public RawUpdateRecordsRequest setNewValuesMaps(List<Map<String,String>> newValuesMaps)

List of new values for the matching records. Each element is a map with (key, value) pairs where the keys are the names of the columns whose values are to be updated; the values are the new values. The number of elements in the list should match the length of expressions.

Parameters:

newValuesMaps - The new value for newValuesMaps.

Returns:

this to mimic the builder pattern.

getRecordsToInsert

public List<ByteBuffer> getRecordsToInsert()

An *optional* list of new binary-avro encoded records to insert, one for each update. If one of expressions does not yield a matching record to be updated, then the corresponding element from this list will be added to the table. The default value is an empty List.

Returns:

The current value of recordsToInsert.

setRecordsToInsert

public RawUpdateRecordsRequest setRecordsToInsert(List<ByteBuffer> recordsToInsert)

An *optional* list of new binary-avro encoded records to insert, one for each update. If one of expressions does not yield a matching record to be updated, then the corresponding element from this list will be added to the table. The default value is an empty List.

Parameters:

recordsToInsert - The new value for recordsToInsert.

Returns:

this to mimic the builder pattern.

getRecordsToInsertStr

public List<String> getRecordsToInsertStr()

An optional list of JSON encoded objects to insert, one for each update, to be added if the particular update did not match any objects. The default value is an empty List.

Returns:

The current value of recordsToInsertStr.

setRecordsToInsertStr

public RawUpdateRecordsRequest setRecordsToInsertStr(List<String> recordsToInsertStr)

An optional list of JSON encoded objects to insert, one for each update, to be added if the particular update did not match any objects. The default value is an empty List.

Parameters:

recordsToInsertStr - The new value for recordsToInsertStr.

Returns:

this to mimic the builder pattern.

getRecordEncoding

public String getRecordEncoding()

Identifies which of recordsToInsert and recordsToInsertStr should be used. Supported values:

• BINARY
• JSON

The default value is BINARY.

Returns:

The current value of recordEncoding.

setRecordEncoding

public RawUpdateRecordsRequest setRecordEncoding(String recordEncoding)

Identifies which of recordsToInsert and recordsToInsertStr should be used. Supported values:

• BINARY
• JSON

The default value is BINARY.

Parameters:

recordEncoding - The new value for recordEncoding.

Returns:

this to mimic the builder pattern.

getOptions

public Map<String,String> getOptions()

Optional parameters.

• GLOBAL_EXPRESSION: An optional global expression to reduce the search space of the predicates listed in expressions. The default value is ''.
• BYPASS_SAFETY_CHECKS: When set to TRUE, all predicates are available for primary key updates. Keep in mind that it is possible to destroy data in this case, since a single predicate may match multiple objects (potentially all of records of a table), and then updating all of those records to have the same primary key will, due to the primary key uniqueness constraints, effectively delete all but one of those updated records. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• UPDATE_ON_EXISTING_PK: Specifies the record collision policy for updating a table with a primary key. There are two ways that a record collision can occur. The first is an "update collision", which happens when the update changes the value of the updated record's primary key, and that new primary key already exists as the primary key of another record in the table. The second is an "insert collision", which occurs when a given filter in expressions finds no records to update, and the alternate insert record given in recordsToInsert (or recordsToInsertStr) contains a primary key matching that of an existing record in the table. If UPDATE_ON_EXISTING_PK is set to TRUE, "update collisions" will result in the existing record collided into being removed and the record updated with values specified in newValuesMaps taking its place; "insert collisions" will result in the collided-into record being updated with the values in recordsToInsert/recordsToInsertStr (if given). If set to FALSE, the existing collided-into record will remain unchanged, while the update will be rejected and the error handled as determined by IGNORE_EXISTING_PK. If the specified table does not have a primary key, then this option has no effect. Supported values:
  • TRUE: Overwrite the collided-into record when updating a record's primary key or inserting an alternate record causes a primary key collision between the record being updated/inserted and another existing record in the table
  • FALSE: Reject updates which cause primary key collisions between the record being updated/inserted and an existing record in the table
  The default value is FALSE.
• IGNORE_EXISTING_PK: Specifies the record collision error-suppression policy for updating a table with a primary key, only used when primary key record collisions are rejected (UPDATE_ON_EXISTING_PK is FALSE). If set to TRUE, any record update that is rejected for resulting in a primary key collision with an existing table record will be ignored with no error generated. If FALSE, the rejection of any update for resulting in a primary key collision will cause an error to be reported. If the specified table does not have a primary key or if UPDATE_ON_EXISTING_PK is TRUE, then this option has no effect. Supported values:
  • TRUE: Ignore updates that result in primary key collisions with existing records
  • FALSE: Treat as errors any updates that result in primary key collisions with existing records
  The default value is FALSE.
• UPDATE_PARTITION: Force qualifying records to be deleted and reinserted so their partition membership will be reevaluated. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• TRUNCATE_STRINGS: If set to TRUE, any strings which are too long for their charN string fields will be truncated to fit. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• USE_EXPRESSIONS_IN_NEW_VALUES_MAPS: When set to TRUE, all new values in newValuesMaps are considered as expression values. When set to FALSE, all new values in newValuesMaps are considered as constants. NOTE: When TRUE, string constants will need to be quoted to avoid being evaluated as expressions. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• RECORD_ID: ID of a single record to be updated (returned in the call to GPUdb.insertRecordsRaw or GPUdb.getRecordsFromCollectionRaw).

The default value is an empty Map.

Returns:

The current value of options.

setOptions

public RawUpdateRecordsRequest setOptions(Map<String,String> options)

Optional parameters.

• GLOBAL_EXPRESSION: An optional global expression to reduce the search space of the predicates listed in expressions. The default value is ''.
• BYPASS_SAFETY_CHECKS: When set to TRUE, all predicates are available for primary key updates. Keep in mind that it is possible to destroy data in this case, since a single predicate may match multiple objects (potentially all of records of a table), and then updating all of those records to have the same primary key will, due to the primary key uniqueness constraints, effectively delete all but one of those updated records. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• UPDATE_ON_EXISTING_PK: Specifies the record collision policy for updating a table with a primary key. There are two ways that a record collision can occur. The first is an "update collision", which happens when the update changes the value of the updated record's primary key, and that new primary key already exists as the primary key of another record in the table. The second is an "insert collision", which occurs when a given filter in expressions finds no records to update, and the alternate insert record given in recordsToInsert (or recordsToInsertStr) contains a primary key matching that of an existing record in the table. If UPDATE_ON_EXISTING_PK is set to TRUE, "update collisions" will result in the existing record collided into being removed and the record updated with values specified in newValuesMaps taking its place; "insert collisions" will result in the collided-into record being updated with the values in recordsToInsert/recordsToInsertStr (if given). If set to FALSE, the existing collided-into record will remain unchanged, while the update will be rejected and the error handled as determined by IGNORE_EXISTING_PK. If the specified table does not have a primary key, then this option has no effect. Supported values:
  • TRUE: Overwrite the collided-into record when updating a record's primary key or inserting an alternate record causes a primary key collision between the record being updated/inserted and another existing record in the table
  • FALSE: Reject updates which cause primary key collisions between the record being updated/inserted and an existing record in the table
  The default value is FALSE.
• IGNORE_EXISTING_PK: Specifies the record collision error-suppression policy for updating a table with a primary key, only used when primary key record collisions are rejected (UPDATE_ON_EXISTING_PK is FALSE). If set to TRUE, any record update that is rejected for resulting in a primary key collision with an existing table record will be ignored with no error generated. If FALSE, the rejection of any update for resulting in a primary key collision will cause an error to be reported. If the specified table does not have a primary key or if UPDATE_ON_EXISTING_PK is TRUE, then this option has no effect. Supported values:
  • TRUE: Ignore updates that result in primary key collisions with existing records
  • FALSE: Treat as errors any updates that result in primary key collisions with existing records
  The default value is FALSE.
• UPDATE_PARTITION: Force qualifying records to be deleted and reinserted so their partition membership will be reevaluated. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• TRUNCATE_STRINGS: If set to TRUE, any strings which are too long for their charN string fields will be truncated to fit. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• USE_EXPRESSIONS_IN_NEW_VALUES_MAPS: When set to TRUE, all new values in newValuesMaps are considered as expression values. When set to FALSE, all new values in newValuesMaps are considered as constants. NOTE: When TRUE, string constants will need to be quoted to avoid being evaluated as expressions. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• RECORD_ID: ID of a single record to be updated (returned in the call to GPUdb.insertRecordsRaw or GPUdb.getRecordsFromCollectionRaw).

The default value is an empty Map.

Parameters:

options - The new value for options.

Returns:

this to mimic the builder pattern.

getSchema

public org.apache.avro.Schema getSchema()

This method supports the Avro framework and is not intended to be called directly by the user.

Specified by:

getSchema in interface org.apache.avro.generic.GenericContainer

Returns:

The schema object describing this class.

get

public Object get(int index)

This method supports the Avro framework and is not intended to be called directly by the user.

Specified by:

get in interface org.apache.avro.generic.IndexedRecord

Parameters:

index - the position of the field to get

Returns:

value of the field with the given index.

Throws:

IndexOutOfBoundsException

put

public void put(int index,
                Object value)

This method supports the Avro framework and is not intended to be called directly by the user.

Specified by:

put in interface org.apache.avro.generic.IndexedRecord

Parameters:

index - the position of the field to set

value - the value to set

Throws:

IndexOutOfBoundsException

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object