| 1 | /* |
| 2 | * Copyright 2006-2008 the original author or authors. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.springframework.batch.core.resource; |
| 17 | |
| 18 | import java.sql.PreparedStatement; |
| 19 | import java.sql.SQLException; |
| 20 | import java.util.List; |
| 21 | import java.util.Map; |
| 22 | |
| 23 | import org.springframework.batch.core.JobParameters; |
| 24 | import org.springframework.batch.core.StepExecution; |
| 25 | import org.springframework.batch.core.StepExecutionListener; |
| 26 | import org.springframework.batch.core.listener.StepExecutionListenerSupport; |
| 27 | import org.springframework.beans.factory.InitializingBean; |
| 28 | import org.springframework.jdbc.core.PreparedStatementSetter; |
| 29 | import org.springframework.jdbc.core.SqlTypeValue; |
| 30 | import org.springframework.jdbc.core.StatementCreatorUtils; |
| 31 | import org.springframework.util.Assert; |
| 32 | |
| 33 | /** |
| 34 | * Implementation of the {@link PreparedStatementSetter} interface that also implements |
| 35 | * {@link StepExecutionListener} and uses {@link JobParameters} to set the parameters on a |
| 36 | * PreparedStatement. |
| 37 | * |
| 38 | * @author Lucas Ward |
| 39 | * |
| 40 | */ |
| 41 | public class StepExecutionPreparedStatementSetter extends StepExecutionListenerSupport implements |
| 42 | PreparedStatementSetter, InitializingBean { |
| 43 | |
| 44 | private List parameterKeys; |
| 45 | private JobParameters jobParameters; |
| 46 | |
| 47 | public void setValues(PreparedStatement ps) throws SQLException { |
| 48 | Map parameters = jobParameters.getParameters(); |
| 49 | for(int i = 0; i < parameterKeys.size(); i++){ |
| 50 | Object arg = parameters.get(parameterKeys.get(i)); |
| 51 | if(arg == null){ |
| 52 | throw new IllegalStateException("No job parameter found for with key of: [" + parameterKeys.get(i) + "]"); |
| 53 | } |
| 54 | StatementCreatorUtils.setParameterValue(ps, i + 1, SqlTypeValue.TYPE_UNKNOWN, arg); |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | public void beforeStep(StepExecution stepExecution) { |
| 59 | this.jobParameters = stepExecution.getJobParameters(); |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * The parameter names that will be pulled from the {@link JobParameters}. It is |
| 64 | * assumed that their order in the List is the order of the parameters in the |
| 65 | * PreparedStatement. |
| 66 | */ |
| 67 | public void setParameterKeys(List parameterKeys) { |
| 68 | this.parameterKeys = parameterKeys; |
| 69 | } |
| 70 | |
| 71 | public void afterPropertiesSet() throws Exception { |
| 72 | Assert.notNull(parameterKeys, "Parameters names must be provided"); |
| 73 | } |
| 74 | } |