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/**
* Copyright Microsoft Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.microsoft.azure.storage.table;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import com.fasterxml.jackson.core.JsonParseException;
import com.microsoft.azure.storage.Constants;
import com.microsoft.azure.storage.OperationContext;
import com.microsoft.azure.storage.StorageException;
import com.microsoft.azure.storage.StorageExtendedErrorInformation;
import com.microsoft.azure.storage.core.ExecutionEngine;
import com.microsoft.azure.storage.core.SR;
import com.microsoft.azure.storage.core.StorageRequest;
import com.microsoft.azure.storage.core.Utility;
/**
* A class which represents a single table operation.
*
* Use the static factory methods to construct {@link TableOperation} instances for operations on tables that insert,
* update, merge, delete, replace or retrieve table entities. To execute a {@link TableOperation} instance, call the
* execute method on a {@link CloudTableClient} instance. A {@link TableOperation} may be executed directly
* or as part of a {@link TableBatchOperation}. If a {@link TableOperation} returns an entity result, it is stored in
* the corresponding {@link TableResult} returned by the execute method.
*
*/
public class TableOperation {
/**
* A static factory method returning a {@link TableOperation} instance to delete the specified entity from Microsoft
* Azure storage. To execute this {@link TableOperation} on a given table, call the
* {@link CloudTable#execute(TableOperation)} method on a {@link CloudTableClient} instance with the
*
* @param entity
* The object instance implementing {@link TableEntity} to associate with the operation.
* @return
* A new {@link TableOperation} instance to insert the table entity.
*/
public static TableOperation delete(final TableEntity entity) {
Utility.assertNotNull("entity", entity);
Utility.assertNotNullOrEmpty("entity etag", entity.getEtag());
return new TableOperation(entity, TableOperationType.DELETE);
}
/**
* A static factory method returning a {@link TableOperation} instance to insert the specified entity into
* Microsoft Azure storage. To execute this {@link TableOperation} on a given table, call the
* {@link CloudTable#execute(TableOperation)} method on a {@link CloudTableClient} instance with the
*
* @param entity
* The object instance implementing {@link TableEntity} to associate with the operation.
* @return
* A new {@link TableOperation} instance to insert the table entity.
*/
public static TableOperation insert(final TableEntity entity) {
return insert(entity, false);
}
/**
* A static factory method returning a {@link TableOperation} instance to insert the specified entity into
* Microsoft Azure storage. To execute this {@link TableOperation} on a given table, call the
* {@link CloudTable#execute(TableOperation)} method on a {@link CloudTableClient} instance with the
*
* @param entity
* The object instance implementing {@link TableEntity} to associate with the operation.
* @param echoContent
* The boolean representing whether the message payload should be returned in the response.
* @return
* A new {@link TableOperation} instance to insert the table entity.
*/
public static TableOperation insert(final TableEntity entity, boolean echoContent) {
Utility.assertNotNull("entity", entity);
return new TableOperation(entity, TableOperationType.INSERT, echoContent);
}
/**
* A static factory method returning a {@link TableOperation} instance to merge the specified entity into
* Microsoft Azure storage, or insert it if it does not exist. To execute this {@link TableOperation} on a given
* table, call
* the {@link CloudTable#execute(TableOperation)} method on a {@link CloudTableClient} instance with
* the table name and the {@link TableOperation} as arguments.
*
* @param entity
* The object instance implementing {@link TableEntity} to associate with the operation.
* @return
* A new {@link TableOperation} instance for inserting or merging the table entity.
*/
public static TableOperation insertOrMerge(final TableEntity entity) {
Utility.assertNotNull("entity", entity);
return new TableOperation(entity, TableOperationType.INSERT_OR_MERGE);
}
/**
* A static factory method returning a {@link TableOperation} instance to replace the specified entity in
* Microsoft Azure storage, or insert it if it does not exist. To execute this {@link TableOperation} on a given
* table, call
* the {@link CloudTable#execute(TableOperation)} method on a {@link CloudTableClient} instance with
* the table name and the {@link TableOperation} as arguments.
*
* @param entity
* The object instance implementing {@link TableEntity} to associate with the operation.
* @return
* A new {@link TableOperation} instance for inserting or replacing the table entity.
*/
public static TableOperation insertOrReplace(final TableEntity entity) {
Utility.assertNotNull("entity", entity);
return new TableOperation(entity, TableOperationType.INSERT_OR_REPLACE);
}
/**
* A static factory method returning a {@link TableOperation} instance to merge the specified table entity into
* Microsoft Azure storage. To execute this {@link TableOperation} on a given table, call the
* {@link CloudTable#execute(TableOperation)} method on a {@link CloudTableClient} instance with the
*
* @param entity
* The object instance implementing {@link TableEntity} to associate with the operation.
* @return
* A new {@link TableOperation} instance for merging the table entity.
*/
public static TableOperation merge(final TableEntity entity) {
Utility.assertNotNull("entity", entity);
Utility.assertNotNullOrEmpty("entity etag", entity.getEtag());
return new TableOperation(entity, TableOperationType.MERGE);
}
/**
* A static factory method returning a {@link TableOperation} instance to retrieve the specified table entity and
* return it as the specified type. To execute this {@link TableOperation} on a given table, call the
* {@link CloudTable#execute(TableOperation)} method on a {@link CloudTableClient} instance with the
*
* @param partitionKey
* A String which specifies the PartitionKey value for the entity to retrieve.
* @param rowKey
* A String which specifies the RowKey value for the entity to retrieve.
* @param clazzType
* The class type of the table entity object to retrieve.
* @return
* A new {@link TableOperation} instance for retrieving the table entity.
*/
public static TableOperation retrieve(final String partitionKey, final String rowKey,
final Class clazzType) {
final QueryTableOperation retOp = new QueryTableOperation(partitionKey, rowKey);
retOp.setClazzType(clazzType);
return retOp;
}
/**
* A static factory method returning a {@link TableOperation} instance to retrieve the specified table entity and
* return a projection of it using the specified resolver. To execute this {@link TableOperation} on a given table,
* call the {@link CloudTable#execute(TableOperation)} method on a {@link CloudTableClient} instance
* with the table name and the {@link TableOperation} as arguments.
*
* @param partitionKey
* A String which specifies the PartitionKey value for the entity to retrieve.
* @param rowKey
* A String which specifies the RowKey value for the entity to retrieve.
* @param resolver
* The implementation of {@link EntityResolver} to use to project the result entity as type T.
* @return
* A new {@link TableOperation} instance for retrieving the table entity.
*/
public static TableOperation retrieve(final String partitionKey, final String rowKey,
final EntityResolver resolver) {
final QueryTableOperation retOp = new QueryTableOperation(partitionKey, rowKey);
retOp.setResolver(resolver);
return retOp;
}
/**
* A static factory method returning a {@link TableOperation} instance to replace the specified table entity. To
* execute this {@link TableOperation} on a given table, call the
* {@link CloudTable#execute(TableOperation)} method.
*
* @param entity
* The object instance implementing {@link TableEntity} to associate with the operation.
* @return
* A new {@link TableOperation} instance for replacing the table entity.
*/
public static TableOperation replace(final TableEntity entity) {
Utility.assertNotNullOrEmpty("entity etag", entity.getEtag());
return new TableOperation(entity, TableOperationType.REPLACE);
}
/**
* The table entity instance associated with the operation.
*/
private TableEntity entity;
/**
* The {@link TableOperationType} enumeration value for the operation type.
*/
private TableOperationType opType = null;
/**
* The value that represents whether the message payload should be returned in the response.
*/
private boolean echoContent;
/**
* Nullary Default Constructor.
*/
protected TableOperation() {
// Empty constructor.
}
/**
* Reserved for internal use. Constructs a {@link TableOperation} with the specified table entity and operation
* type.
*
* @param entity
* The object instance implementing {@link TableEntity} to associate with the operation.
* @param opType
* The {@link TableOperationType} enumeration value for the operation type.
*/
protected TableOperation(final TableEntity entity, final TableOperationType opType) {
this(entity, opType, false);
}
/**
* Reserved for internal use. Constructs a {@link TableOperation} with the specified table entity and operation
* type.
*
* @param entity
* The object instance implementing {@link TableEntity} to associate with the operation.
* @param opType
* The {@link TableOperationType} enumeration value for the operation type.
* @param echoContent
* The boolean representing whether the message payload should be returned in the response.
*/
protected TableOperation(final TableEntity entity, final TableOperationType opType, final boolean echoContent) {
this.entity = entity;
this.opType = opType;
this.echoContent = echoContent;
}
/**
* Reserved for internal use. Performs a delete operation on the specified table, using the specified
* {@link TableRequestOptions} and {@link OperationContext}.
*
* This method will invoke the Delete
* Entity REST API to execute this table operation, using the Table service endpoint and storage account
* credentials in the {@link CloudTableClient} object.
*
* @param client
* A {@link CloudTableClient} instance specifying the Table service endpoint, storage account
* credentials, and any additional query parameters.
* @param tableName
* A String which specifies the name of the table.
* @param options
* A {@link TableRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation.
* @param opContext
* An {@link OperationContext} object for tracking the current operation.
*
* @return
* A {@link TableResult} which represents the results of executing the operation.
*
* @throws StorageException
* if an error occurs in the storage operation.
*/
private TableResult performDelete(final CloudTableClient client, final String tableName,
final TableRequestOptions options, final OperationContext opContext) throws StorageException {
return ExecutionEngine.executeWithRetry(client, this, this.deleteImpl(client, tableName, options, opContext),
options.getRetryPolicyFactory(), opContext);
}
private StorageRequest deleteImpl(final CloudTableClient client,
final String tableName, final TableRequestOptions options, final OperationContext opContext)
throws StorageException {
final boolean isTableEntry = TableConstants.TABLES_SERVICE_TABLES_NAME.equals(tableName);
final String tableIdentity = isTableEntry ? this.getEntity().writeEntity(opContext)
.get(TableConstants.TABLE_NAME).getValueAsString() : null;
if (!isTableEntry) {
Utility.assertNotNullOrEmpty(SR.ETAG_INVALID_FOR_DELETE, this.getEntity().getEtag());
Utility.assertNotNull(SR.PARTITIONKEY_MISSING_FOR_DELETE, this.getEntity().getPartitionKey());
Utility.assertNotNull(SR.ROWKEY_MISSING_FOR_DELETE, this.getEntity().getRowKey());
}
final StorageRequest deleteRequest = new StorageRequest(
options, client.getStorageUri()) {
@Override
public HttpURLConnection buildRequest(CloudTableClient client, TableOperation operation,
OperationContext context) throws Exception {
return TableRequest.delete(client.getTransformedEndPoint(context).getUri(this.getCurrentLocation()),
options, null, context, tableName, generateRequestIdentity(isTableEntry, tableIdentity),
operation.getEntity().getEtag());
}
@Override
public void signRequest(HttpURLConnection connection, CloudTableClient client, OperationContext context)
throws Exception {
StorageRequest.signTableRequest(connection, client, -1L, context);
}
@Override
public TableResult preProcessResponse(TableOperation operation, CloudTableClient client,
OperationContext context) throws Exception {
if (this.getResult().getStatusCode() != HttpURLConnection.HTTP_NO_CONTENT) {
throw TableServiceException.generateTableServiceException(this.getResult(), operation,
this.getConnection().getErrorStream(), options.getTablePayloadFormat());
}
return operation.parseResponse(null, this.getResult().getStatusCode(), null, opContext, options);
}
@Override
public StorageExtendedErrorInformation parseErrorDetails() {
return TableStorageErrorDeserializer.parseErrorDetails(this);
}
};
return deleteRequest;
}
/**
* Reserved for internal use. Performs an insert operation on the specified table, using the specified
* {@link TableRequestOptions} and {@link OperationContext}.
*
* This method will invoke the Insert Entity REST API to execute this table operation, using the Table service
* endpoint and storage account credentials in the {@link CloudTableClient} object.
*
* @param client
* A {@link CloudTableClient} instance specifying the Table service endpoint, storage account
* credentials, and any additional query parameters.
* @param tableName
* A String which specifies the name of the table.
* @param options
* A {@link TableRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation.
* @param opContext
* An {@link OperationContext} object for tracking the current operation.
*
* @return
* A {@link TableResult} which represents the results of executing the operation.
*
* @throws StorageException
* if an error occurs in the storage operation.
*/
private TableResult performInsert(final CloudTableClient client, final String tableName,
final TableRequestOptions options, final OperationContext opContext) throws StorageException {
return ExecutionEngine.executeWithRetry(client, this, this.insertImpl(client, tableName, options, opContext),
options.getRetryPolicyFactory(), opContext);
}
private StorageRequest insertImpl(final CloudTableClient client,
final String tableName, final TableRequestOptions options, final OperationContext opContext)
throws StorageException {
final boolean isTableEntry = TableConstants.TABLES_SERVICE_TABLES_NAME.equals(tableName);
final String tableIdentity = isTableEntry ? this.getEntity().writeEntity(opContext)
.get(TableConstants.TABLE_NAME).getValueAsString() : null;
// Inserts need row key and partition key
if (!isTableEntry) {
Utility.assertNotNull(SR.PARTITIONKEY_MISSING_FOR_INSERT, this.getEntity().getPartitionKey());
Utility.assertNotNull(SR.ROWKEY_MISSING_FOR_INSERT, this.getEntity().getRowKey());
}
ByteArrayOutputStream entityStream = new ByteArrayOutputStream();
try {
TableEntitySerializer.writeSingleEntityToStream(entityStream, options, this.entity, isTableEntry, opContext);
// We need to buffer once and use it for all retries instead of serializing the entity every single time.
// In the future, this could also be used to calculate transactional MD5 for table operations.
final byte[] entityBytes = entityStream.toByteArray();
final StorageRequest putRequest = new StorageRequest(
options, client.getStorageUri()) {
@Override
public HttpURLConnection buildRequest(CloudTableClient client, TableOperation operation,
OperationContext context) throws Exception {
this.setSendStream(new ByteArrayInputStream(entityBytes));
this.setLength((long) entityBytes.length);
return TableRequest.insert(
client.getTransformedEndPoint(opContext).getUri(this.getCurrentLocation()), options, null,
opContext, tableName, generateRequestIdentity(isTableEntry, tableIdentity),
operation.opType != TableOperationType.INSERT ? operation.getEntity().getEtag() : null,
operation.getEchoContent(), operation.opType.getUpdateType());
}
@Override
public void signRequest(HttpURLConnection connection, CloudTableClient client, OperationContext context)
throws Exception {
StorageRequest.signTableRequest(connection, client, -1L, context);
}
@Override
public TableResult preProcessResponse(TableOperation operation, CloudTableClient client,
OperationContext context) throws Exception {
if (operation.opType == TableOperationType.INSERT) {
if (operation.getEchoContent()
&& this.getResult().getStatusCode() == HttpURLConnection.HTTP_CREATED) {
// Insert should receive created if echo content is on
return new TableResult();
}
else if (!operation.getEchoContent()
&& this.getResult().getStatusCode() == HttpURLConnection.HTTP_NO_CONTENT) {
// Insert should receive no content if echo content is off
return operation.parseResponse(null, this.getResult().getStatusCode(), this.getConnection()
.getHeaderField(TableConstants.HeaderConstants.ETAG), opContext, options);
}
}
else if (this.getResult().getStatusCode() == HttpURLConnection.HTTP_NO_CONTENT) {
// InsertOrMerge and InsertOrReplace should always receive no content
return operation.parseResponse(null, this.getResult().getStatusCode(), this.getConnection()
.getHeaderField(TableConstants.HeaderConstants.ETAG), opContext, options);
}
throw TableServiceException.generateTableServiceException(this.getResult(), operation,
this.getConnection().getErrorStream(), options.getTablePayloadFormat());
}
@Override
public TableResult postProcessResponse(HttpURLConnection connection, TableOperation operation,
CloudTableClient client, OperationContext context, TableResult result) throws Exception {
if (operation.opType == TableOperationType.INSERT && operation.getEchoContent()) {
result = operation.parseResponse(this.getConnection().getInputStream(), this.getResult()
.getStatusCode(),
this.getConnection().getHeaderField(TableConstants.HeaderConstants.ETAG), opContext,
options);
}
return result;
}
@Override
public StorageExtendedErrorInformation parseErrorDetails() {
return TableStorageErrorDeserializer.parseErrorDetails(this);
}
};
return putRequest;
}
catch (IOException e) {
// The request was not even made. There was an error while trying to read the entity. Just throw.
StorageException translatedException = StorageException.translateClientException(e);
throw translatedException;
}
}
/**
* Reserved for internal use. Perform a merge operation on the specified table, using the specified
* {@link TableRequestOptions} and {@link OperationContext}.
*
* This method will invoke the Merge Entity REST API to execute this table operation, using the Table service
* endpoint and storage account credentials in the {@link CloudTableClient} object.
*
* @param client
* A {@link CloudTableClient} instance specifying the Table service endpoint, storage account
* credentials, and any additional query parameters.
* @param tableName
* A String which specifies the name of the table.
* @param options
* A {@link TableRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation.
* @param opContext
* An {@link OperationContext} object for tracking the current operation.
*
* @return
* A {@link TableResult} which represents the results of executing the operation.
*
* @throws StorageException
* if an error occurs in the storage operation.
* @throws IOException
*/
private TableResult performMerge(final CloudTableClient client, final String tableName,
final TableRequestOptions options, final OperationContext opContext) throws StorageException {
return ExecutionEngine.executeWithRetry(client, this, this.mergeImpl(client, tableName, options, opContext),
options.getRetryPolicyFactory(), opContext);
}
private StorageRequest mergeImpl(final CloudTableClient client,
final String tableName, final TableRequestOptions options, final OperationContext opContext)
throws StorageException {
Utility.assertNotNullOrEmpty(SR.ETAG_INVALID_FOR_MERGE, this.getEntity().getEtag());
Utility.assertNotNull(SR.PARTITIONKEY_MISSING_FOR_MERGE, this.getEntity().getPartitionKey());
Utility.assertNotNull(SR.ROWKEY_MISSING_FOR_MERGE, this.getEntity().getRowKey());
ByteArrayOutputStream entityStream = new ByteArrayOutputStream();
try {
TableEntitySerializer.writeSingleEntityToStream(entityStream, options, this.getEntity(), false, opContext);
// We need to buffer once and use it for all retries instead of serializing the entity every single time.
// In the future, this could also be used to calculate transactional MD5 for table operations.
final byte[] entityBytes = entityStream.toByteArray();
final StorageRequest putRequest = new StorageRequest(
options, client.getStorageUri()) {
@Override
public HttpURLConnection buildRequest(CloudTableClient client, TableOperation operation,
OperationContext context) throws Exception {
this.setSendStream(new ByteArrayInputStream(entityBytes));
this.setLength((long) entityBytes.length);
return TableRequest.merge(client.getTransformedEndPoint(opContext)
.getUri(this.getCurrentLocation()), options, null, opContext, tableName,
generateRequestIdentity(false, null), operation.getEntity().getEtag());
}
@Override
public void signRequest(HttpURLConnection connection, CloudTableClient client, OperationContext context)
throws Exception {
StorageRequest.signTableRequest(connection, client, -1L, context);
}
@Override
public TableResult preProcessResponse(TableOperation operation, CloudTableClient client,
OperationContext context) throws Exception {
if (this.getResult().getStatusCode() != HttpURLConnection.HTTP_NO_CONTENT) {
throw TableServiceException.generateTableServiceException(this.getResult(), operation,
this.getConnection().getErrorStream(), options.getTablePayloadFormat());
}
return operation.parseResponse(null, this.getResult().getStatusCode(), this.getConnection()
.getHeaderField(TableConstants.HeaderConstants.ETAG), opContext, options);
}
@Override
public StorageExtendedErrorInformation parseErrorDetails() {
return TableStorageErrorDeserializer.parseErrorDetails(this);
}
};
return putRequest;
}
catch (IOException e) {
// The request was not even made. There was an error while trying to read the entity. Just throw.
StorageException translatedException = StorageException.translateClientException(e);
throw translatedException;
}
}
/**
* Reserved for internal use. Perform an update operation on the specified table, using the specified
* {@link TableRequestOptions} and {@link OperationContext}.
*
* This method will invoke the Storage Service REST API to execute this table operation, using the Table service
* endpoint and storage account credentials in the {@link CloudTableClient} object.
*
* @param client
* A {@link CloudTableClient} instance specifying the Table service endpoint, storage account
* credentials, and any additional query parameters.
* @param tableName
* A String which specifies the name of the table.
* @param options
* A {@link TableRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation.
* @param opContext
* An {@link OperationContext} object for tracking the current operation.
*
* @return
* A {@link TableResult} which represents the results of executing the operation.
*
* @throws StorageException
* if an error occurs in the storage operation.
*/
private TableResult performUpdate(final CloudTableClient client, final String tableName,
final TableRequestOptions options, final OperationContext opContext) throws StorageException {
return ExecutionEngine.executeWithRetry(client, this, this.updateImpl(client, tableName, options, opContext),
options.getRetryPolicyFactory(), opContext);
}
private StorageRequest updateImpl(final CloudTableClient client,
final String tableName, final TableRequestOptions options, final OperationContext opContext)
throws StorageException {
Utility.assertNotNullOrEmpty(SR.ETAG_INVALID_FOR_UPDATE, this.getEntity().getEtag());
Utility.assertNotNull(SR.PARTITIONKEY_MISSING_FOR_UPDATE, this.getEntity().getPartitionKey());
Utility.assertNotNull(SR.ROWKEY_MISSING_FOR_UPDATE, this.getEntity().getRowKey());
ByteArrayOutputStream entityStream = new ByteArrayOutputStream();
try {
TableEntitySerializer.writeSingleEntityToStream(entityStream, options, this.getEntity(), false, opContext);
// We need to buffer once and use it for all retries instead of serializing the entity every single time.
// In the future, this could also be used to calculate transactional MD5 for table operations.
final byte[] entityBytes = entityStream.toByteArray();
final StorageRequest putRequest = new StorageRequest(
options, client.getStorageUri()) {
@Override
public HttpURLConnection buildRequest(CloudTableClient client, TableOperation operation,
OperationContext context) throws Exception {
this.setSendStream(new ByteArrayInputStream(entityBytes));
this.setLength((long) entityBytes.length);
return TableRequest.update(
client.getTransformedEndPoint(context).getUri(this.getCurrentLocation()), options, null,
context, tableName, generateRequestIdentity(false, null), operation.getEntity()
.getEtag());
}
@Override
public void signRequest(HttpURLConnection connection, CloudTableClient client, OperationContext context)
throws Exception {
StorageRequest.signTableRequest(connection, client, -1L, context);
}
@Override
public TableResult preProcessResponse(TableOperation operation, CloudTableClient client,
OperationContext context) throws Exception {
if (this.getResult().getStatusCode() != HttpURLConnection.HTTP_NO_CONTENT) {
throw TableServiceException.generateTableServiceException(this.getResult(), operation,
this.getConnection().getErrorStream(), options.getTablePayloadFormat());
}
return operation.parseResponse(null, this.getResult().getStatusCode(), this.getConnection()
.getHeaderField(TableConstants.HeaderConstants.ETAG), opContext, options);
}
@Override
public StorageExtendedErrorInformation parseErrorDetails() {
return TableStorageErrorDeserializer.parseErrorDetails(this);
}
};
return putRequest;
}
catch (IOException e) {
// The request was not even made. There was an error while trying to read the entity. Just throw.
StorageException translatedException = StorageException.translateClientException(e);
throw translatedException;
}
}
/**
* Reserved for internal use. Execute this table operation on the specified table, using the specified
* {@link TableRequestOptions} and {@link OperationContext}.
*
* This method will invoke the Storage Service REST API to execute this table operation, using the Table service
* endpoint and storage account credentials in the {@link CloudTableClient} object.
*
* @param client
* A {@link CloudTableClient} instance specifying the Table service endpoint, storage account
* credentials, and any additional query parameters.
* @param tableName
* A String which specifies the name of the table.
* @param options
* A {@link TableRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation.
* @param opContext
* An {@link OperationContext} object for tracking the current operation.
*
* @return
* A {@link TableResult} which represents the results of executing the operation.
*
* @throws StorageException
* if an error occurs in the storage operation.
*/
protected TableResult execute(final CloudTableClient client, final String tableName, TableRequestOptions options,
OperationContext opContext) throws StorageException {
if (opContext == null) {
opContext = new OperationContext();
}
opContext.initialize();
options = TableRequestOptions.populateAndApplyDefaults(options, client);
Utility.assertNotNullOrEmpty(TableConstants.TABLE_NAME, tableName);
if (this.getOperationType() == TableOperationType.INSERT
|| this.getOperationType() == TableOperationType.INSERT_OR_MERGE
|| this.getOperationType() == TableOperationType.INSERT_OR_REPLACE) {
return this.performInsert(client, tableName, options, opContext);
}
else if (this.getOperationType() == TableOperationType.DELETE) {
return this.performDelete(client, tableName, options, opContext);
}
else if (this.getOperationType() == TableOperationType.MERGE) {
return this.performMerge(client, tableName, options, opContext);
}
else if (this.getOperationType() == TableOperationType.REPLACE) {
return this.performUpdate(client, tableName, options, opContext);
}
else if (this.getOperationType() == TableOperationType.RETRIEVE) {
return ((QueryTableOperation) this).performRetrieve(client, tableName, options, opContext);
}
else {
throw new IllegalArgumentException(SR.UNKNOWN_TABLE_OPERATION);
}
}
/**
* Reserved for internal use. Generates the request identity, consisting of the specified entry name, or the
* PartitionKey and RowKey pair from the operation, to identify the operation target.
*
* @param isSingleIndexEntry
* Pass true to use the specified entryName parameter, or false to
* use PartitionKey and RowKey values from the operation as the request identity.
* @param entryName
* The entry name to use as the request identity if the isSingleIndexEntry parameter is
* true.
* @return
* A String which represents the formatted request identity string.
* @throws StorageException
* If a storage service error occurred.
*/
protected String generateRequestIdentity(boolean isSingleIndexEntry, final String entryName)
throws StorageException {
if (isSingleIndexEntry) {
return String.format("'%s'", entryName.replace("'", "''"));
}
if (this.opType == TableOperationType.INSERT) {
return Constants.EMPTY_STRING;
}
else {
String pk = null;
String rk = null;
if (this.opType == TableOperationType.RETRIEVE) {
final QueryTableOperation qOp = (QueryTableOperation) this;
pk = qOp.getPartitionKey();
rk = qOp.getRowKey();
}
else {
pk = this.getEntity().getPartitionKey();
rk = this.getEntity().getRowKey();
}
return String.format("%s='%s',%s='%s'",
TableConstants.PARTITION_KEY, pk.replace("'", "''"),
TableConstants.ROW_KEY, rk.replace("'", "''"));
}
}
/**
* Reserved for internal use. Generates the request identity string for the specified table. The request identity
* string combines the table name with the PartitionKey and RowKey from the operation to identify specific table
* entities. This request identity is already UrlEncoded.
*
* @param tableName
* A String which specifies the name of the table.
* @return
* A String which represents the formatted request identity string for the specified table.
* @throws StorageException
*/
protected String generateRequestIdentityWithTable(final String tableName) throws StorageException {
return String.format("%s(%s)", tableName, generateRequestIdentity(false, null));
}
/**
* Reserved for internal use. Gets the table entity associated with this operation.
*
* @return
* The {@link TableEntity} instance associated with this operation.
*/
protected synchronized final TableEntity getEntity() {
return this.entity;
}
/**
* Reserved for internal use. Gets the operation type for this operation.
*
* @return the opType
* The {@link TableOperationType} instance associated with this operation.
*/
protected synchronized final TableOperationType getOperationType() {
return this.opType;
}
/**
* Reserved for internal use. Parses the table operation response into a {@link TableResult} to return.
*
* @param inStream
* An InputStream which specifies the response to an insert operation.
* @param httpStatusCode
* An int which represents the HTTP status code returned from the operation request.
* @param etagFromHeader
* The String which specifies the Etag returned with the operation response.
* @param opContext
* An {@link OperationContext} object that represents the context for the current operation.
*
* @return
* The {@link TableResult} representing the result of the operation.
*
* @throws InstantiationException
* if an error occurs in object construction.
* @throws IllegalAccessException
* if an error occurs in reflection on an object type.
* @throws StorageException
* if an error occurs in the storage operation.
* @throws IOException
* if an error occurs while accessing the {@link InputStream} with Json.
* @throws JsonParseException
* if an error occurs while parsing the Json, if Json is used.
*/
protected TableResult parseResponse(final InputStream inStream, final int httpStatusCode, String etagFromHeader,
final OperationContext opContext, final TableRequestOptions options) throws InstantiationException,
IllegalAccessException, StorageException, JsonParseException, IOException {
TableResult resObj;
if (this.opType == TableOperationType.INSERT && this.echoContent) {
// Sending null for class type and resolver will ignore parsing the return payload.
resObj = TableDeserializer.parseSingleOpResponse(inStream, options, httpStatusCode, null /* clazzType */,
null /*resolver */, opContext);
resObj.setEtag(etagFromHeader);
resObj.updateResultObject(this.getEntity());
}
else {
resObj = new TableResult(httpStatusCode);
resObj.setResult(this.getEntity());
if (this.opType != TableOperationType.DELETE && etagFromHeader != null) {
resObj.setEtag(etagFromHeader);
resObj.updateResultObject(this.getEntity());
}
}
return resObj;
}
/**
* Reserved for internal use. Sets the {@link TableEntity} instance for the table operation.
*
* @param entity
* The {@link TableEntity} instance to set.
*/
protected synchronized final void setEntity(final TableEntity entity) {
this.entity = entity;
}
/**
* Gets the boolean representing whether the message payload should be returned in the response.
*
* @return true if the message payload should be returned in the response; otherwise false
*/
protected boolean getEchoContent() {
return this.echoContent;
}
/**
* Sets the boolean representing whether the message payload should be returned in the response.
*
* @param echoContent
* true if the message payload should be returned in the response; otherwise
* false.
*/
protected void setEchoContent(boolean echoContent) {
this.echoContent = echoContent;
}
}