Java Based Apps on SAP Cloud_2_开发ESPM

Developing Java-Based Apps on SAP Cloud Platform Week 2

JPA Model

Check Out JPA Branch

修改web.xml
Path: src/main/webapp/WEB-INF/web.xml, Project: espm-cloud-web,加入代码

    <resource-ref>        <res-ref-name>jdbc/DefaultDB</res-ref-name>        <res-type>javax.sql.DataSource</res-type>    </resource-ref>

修改JpaEntityManagerFactory.java
Path: src/main/java/>com.sap.espm.model.web>
JpaEntityManagerFactory.java, Project: espm-cloud-web加入代码

    public static synchronized EntityManagerFactory getEntityManagerFactory() throws NamingException, SQLException    {        if (entityManagerFactory == null)        {            final InitialContext ctx = new InitialContext();            final DataSource ds = (DataSource) ctx.lookup(DATA_SOURCE_NAME);            final Map<String, Object> properties = new HashMap<String, Object>();            properties.put(PersistenceUnitProperties.NON_JTA_DATASOURCE, ds);            entityManagerFactory = Persistence.createEntityManagerFactory(PERSISTENCE_UNIT_NAME, properties);            Utility.setEntityManagerFactory(entityManagerFactory);        }        return entityManagerFactory;    }

修改SalesOrderHeader.java
path: Java
src/main/java>com.sap.espm.model>SalesOrderHeader.java , Project : espm-cloud-jpa, 加入code

@Entity@Table(name = "ESPM_SALES_ORDER_HEADER")

末尾加入code (如果有error, Date 类型需要导入)

    @PrePersist    private void persist()    {        final Calendar cal = Calendar.getInstance();        final Date date = new Date();        cal.setTime(date);        this.lifeCycleStatus = "N";        this.lifeCycleStatusName = "New";        int itemNumber = 10;        this.netAmount = new BigDecimal("0.00");        this.taxAmount = new BigDecimal("0.00");        this.grossAmount = new BigDecimal("0.00");        this.createdAt = cal;        for (final SalesOrderItem item : salesOrderItems)        {            item.setSalesOrderId(this.getSalesOrderId());            item.setItemNumber(itemNumber);            itemNumber += 10;            item.persist();            this.netAmount = this.netAmount.add(item.getNetAmount()).setScale(3);            this.taxAmount = this.taxAmount.add(item.getTaxAmount()).setScale(3);            this.grossAmount = this.grossAmount.add(item.getGrossAmount()).setScale(3);        }    }

修改persistence.xml
加入code

<class>com.sap.espm.model.SalesOrderHeader</class>

OData Services

Check Out OData Branch
Check Out Commit, 然后Reset

修改EspmServiceFactory
package: com.sap.espm.model.web, Project: espm-cloud-web,加入code

        final ODataJPAContext oDataJPAContext = this.getODataJPAContext();        EntityManagerFactory emf;        try        {            emf = JpaEntityManagerFactory.getEntityManagerFactory();            oDataJPAContext.setEntityManagerFactory(emf);            oDataJPAContext.setPersistenceUnitName(PERSISTENCE_UNIT_NAME);            oDataJPAContext.setJPAEdmExtension(new EspmProcessingExtension());            oDataJPAContext.setJPAEdmMappingModel("EspmEdmMapping.xml");            return oDataJPAContext;        }        catch (final Exception e)        {            throw new ODataRuntimeException(e);        }

修改CustomerProcessor.java
package: com.sap.espm.model.function.impl, Project:
espm-cloud-web

    @EdmFunctionImport(name = "GetCustomerByEmailAddress", entitySet = "Customers", returnType = @ReturnType(type = Type.ENTITY, isCollection = true))    public List<Customer> getCustomerByEmailAddress(@EdmFunctionImportParameter(name = "EmailAddress") final String emailAddress)            throws ODataException

修改EspmProcessingExtension.java
package: com.sap.espm.model.web, Project:
espm-cloud-web

view.registerOperations(CustomerProcessor.class, null);

SAP UI5

Check Out UI5 Branch

修改manifest.json
path: src > main > webapp > webshop , Project: espm-cloud-web

      "dataSources": {            "espmDataModel": {                "uri": "/espm-cloud-web/espm.svc",                "type": "OData",                "settings": {                "odataVersion": "2.0"                }            }        },

修改index.html
path: src > main > webapp > webshop, Project: espm-cloud-web

            sap.ui.getCore().attachInit(function() {                new sap.m.Shell({                    app : new sap.ui.core.ComponentContainer({                        height : "100%",                        name : "com.sap.espm.shop"                    })                }).placeAt("content");            });

修改Component.js
path: src > main > webapp > webshop, Project: espm-cloud-web

            // set the device model, odata model and json model            this.setModel(models.createDeviceModel(), "device");            var sServiceUrl = this.getMetadata().getManifestEntry(                    "sap.app").dataSources.espmDataModel.uri;            var oEspmModel = new sap.ui.model.odata.ODataModel(                    sServiceUrl, {                        json : true,                        loadMetadataAsync : true                    });            this.setModel(oEspmModel, "EspmModel");            var oData = {                ShoppingCart : []            };            var oModel = new sap.ui.model.json.JSONModel(oData);            this.setModel(oModel, "Cart");