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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; } }





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