package foundation.persist;
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import java.math.BigDecimal;
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import java.util.Collection;
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import java.util.Date;
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import java.util.Iterator;
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import java.util.Set;
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import foundation.dao.Filter;
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import foundation.dao.OrderBy;
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import foundation.dao.Page;
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import foundation.data.entity.Entity;
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import foundation.data.entity.EntitySet;
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import foundation.data.meta.field.Field;
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import foundation.data.meta.field.FieldsRuntime;
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import foundation.data.object.DataJoins;
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import foundation.server.config.DBaseType;
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import foundation.util.ContentBuilder;
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import foundation.util.DBDate;
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import foundation.util.Util;
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import foundation.variant.expression.VariantExpression;
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import foundation.variant.expression.VariantList;
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import foundation.variant.expression.VariantSegment;
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import foundation.variant.provider.DataEvent;
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import foundation.variant.provider.IVariantsConsumer;
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import foundation.variant.provider.IVariantsProvider;
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import foundation.variant.provider.VariantLink;
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public class NamedSQL implements Iterable<VariantSegment>, IVariantsConsumer {
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public static final String Code_GetEntity = "getEntity";
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public static final String Code_GetJoinEntity = "getJoinEntity";
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public static final String Code_GetFirstEntity = "getFirstEntity";
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public static final String Code_GetCount = "getCount";
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public static final String Code_GetJoinCount = "getJoinCount";
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public static final String Code_InsertEntity = "insertEntity";
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public static final String Code_UpdateEntityById = "updateById";
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public static final String Code_UpdateByCriteria = "updateByCriteria";
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public static final String Code_UpdateByFilter = "updateByFilter";
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public static final String Code_DeleteByID = "deleteByID";
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public static final String Code_DeleteByFilter = "deleteByCriteria";
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public static final String Code_DeleteChildrenByID = "deleteChildrenByID";
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public static final String Param_Schema = "schema";
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public static final String Param_TableName = "tablename";
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public static final String Param_FieldNames = "fieldNames";
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public static final String Param_FieldNameValues = "fieldNameValues";
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public static final String Param_FieldValues = "fieldValues";
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public static final String Param_FieldMetas = "fieldMetas";
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public static final String Param_PlaceHolders = "placeHolders";
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public static final String Param_Filter = "filter";
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public static final String Param_FieldNamePlaceHolders = "fieldNamePlaceHolders";
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public static final String Param_KeyFieldName = "keyFieldName";
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public static final String Param_OrderBy = "orderby";
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public static final String Param_Page_limit = "limit";
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public static final String Param_Page_RowNo = "rowNo";
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private static final String Param_CommaSeparator = "commaSeparator";
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private static final String Param_JoinSelectFields = "joinSelectFields";
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private static final String Param_JoinSQL = "joinSQL";
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private static NamedSQLContainer namedSQLContainer;
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protected String name;
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protected String sql;
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protected VariantExpression expression;
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protected DBaseType dbaseType;
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static {
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namedSQLContainer = NamedSQLContainer.getInstance();
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}
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public NamedSQL() throws Exception {
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}
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public NamedSQL(String name, String sql) throws Exception {
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this.name = name;
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this.sql = sql;
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parseSQL(sql);
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}
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public NamedSQL(DBaseType dBaseType, String sql) throws Exception {
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this.dbaseType = dBaseType;
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this.sql = sql;
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parseSQL(sql);
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}
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protected void parseSQL(String sql) throws Exception {
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expression = new SQLCreator(sql);
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}
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public static NamedSQL getInstance(String name) throws Exception {
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return getInstance(DBaseType.getMain(), name);
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}
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public static NamedSQL getInstance(DBaseType dbaseType, String name) throws Exception {
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if (Util.isEmpty(name)) {
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return null;
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}
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NamedSQL result = namedSQLContainer.get(name);
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if (result == null) {
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result = namedSQLContainer.get(name);
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}
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if (result == null) {
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throw new Exception("can not find named sql: " + name);
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}
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result = result.createInstance();
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result.dbaseType = dbaseType;
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return result;
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}
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public NamedSQL createInstance() throws Exception {
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NamedSQL instance = new NamedSQL();
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instance.name = this.name;
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instance.sql = this.sql;
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instance.expression = this.expression.newInstance();
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instance.dbaseType = this.dbaseType;
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return instance;
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}
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public NamedSQL setSchema(String schema) {
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return setParam(Param_Schema, schema);
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}
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public NamedSQL setTableName(String tableName) {
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return setParam(Param_TableName, tableName.toLowerCase());
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}
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public NamedSQL setFieldNames(DataEvent event, String names) {
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return setParam(Param_FieldNames, names);
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}
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public NamedSQL setFieldNames(DataEvent event, FieldsRuntime tableMeta) {
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StringBuilder result = new StringBuilder();
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boolean empty = true;
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for (Field field: tableMeta) {
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String name = field.getName();
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if ((DataEvent.Update == event) && "id".equalsIgnoreCase(name)) {
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continue;
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}
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if (!empty) {
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result.append(", ");
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}
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result.append(name);
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empty = false;
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}
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return setParam(Param_FieldNames, result.toString());
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}
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public NamedSQL setFieldNames(DataEvent event, FieldsRuntime tableMeta, Entity entity) {
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StringBuilder result = new StringBuilder();
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boolean empty = true;
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FieldsRuntime entityMeta = entity.getFieldsMeta();
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String[] names = tableMeta.getFieldNames();
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int max = names.length;
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for (int i = 0; i < max; i++) {
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String name = names[i];
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if ((DataEvent.Update == event) && ("id".equalsIgnoreCase(name))) {
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continue;
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}
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if (!entityMeta.contains(name)) {
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continue;
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}
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if (entity.isAbsentValue(name)) {
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continue;
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}
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if (!empty) {
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result.append(", ");
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}
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result.append(name);
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empty = false;
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}
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return setParam(Param_FieldNames, result.toString());
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}
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public NamedSQL setFieldNames(Collection<Field> fields) {
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ContentBuilder result = new ContentBuilder();
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for (Field field: fields) {
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result.append(field.getName(), ", ");
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}
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return setParam(Param_FieldNames, result.toString());
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}
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public NamedSQL setFieldValues(Entity entity) {
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ContentBuilder result = new ContentBuilder(", ");
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int max = entity.getFieldCount();
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for (int i = 0; i < max; i++) {
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if (entity.isAbsentValue(i)) {
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continue;
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}
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result.append(entity.getSQLString(dbaseType, i, "null"));
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}
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return setParam(Param_FieldValues, result.toString());
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}
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public NamedSQL setFieldValues(DataEvent event, FieldsRuntime tableFieldsMeta, Entity entity) throws Exception {
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ContentBuilder result = new ContentBuilder(", ");
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FieldsRuntime entityMeta = entity.getFieldsMeta();
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String[] names = tableFieldsMeta.getFieldNames();
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int max = names.length;
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for (int i = 0; i < max; i++) {
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String name = names[i];
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if ((DataEvent.Update == event) && ("id".equalsIgnoreCase(name))) {
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continue;
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}
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if (!entityMeta.contains(name)) {
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continue;
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}
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if (entity.isAbsentValue(name)) {
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continue;
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}
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result.append(entity.getSQLString(dbaseType, name));
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}
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return setParam(Param_FieldValues, result.toString());
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}
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public NamedSQL setTableMeta(FieldsRuntime entityMeta) {
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ContentBuilder result = new ContentBuilder(", ");
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for (Field field: entityMeta) {
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String line = "`" + field.getName() + "` " + field.getTypeSQLSegment() + " " + field.getNullableSQLSegment();
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result.append(line);
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}
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return setParam(Param_FieldMetas, result.toString());
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}
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public NamedSQL setTableMeta(String tableName, EntitySet entitySet) {
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//1. set table name
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setTableName(tableName);
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//2. set field meta
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ContentBuilder result = new ContentBuilder(", ");
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for (Entity entity: entitySet) {
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String fieldName = entity.getString("fieldName");
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String fieldType = entity.getSQLTypeCode("fieldType", "fieldLength");
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String sqlNullCode = entity.getSQLNullCode("nullable");
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String line = "`" + fieldName + "` " + fieldType + " " + sqlNullCode;
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result.append(line);
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}
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return setParam(Param_FieldMetas, result.toString());
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}
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public NamedSQL setQuotedFieldNames(FieldsRuntime tableMeta) {
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ContentBuilder result = new ContentBuilder();
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for (Field field: tableMeta) {
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result.append(Util.doubleQuotedStr(field.getName()), ", ");
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}
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return setParam(Param_FieldNames, result.toString());
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}
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public NamedSQL setPlaceHolders(int count) {
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ContentBuilder result = new ContentBuilder();
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for (int i = 0; i < count; i++) {
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result.append("?", ", ");
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}
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if (containsVariant(Param_PlaceHolders)) {
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return setParam(Param_PlaceHolders, result.toString());
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}
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else if (containsVariant(Param_FieldValues)) {
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return setParam(Param_FieldValues, result.toString());
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}
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return this;
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}
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public NamedSQL setPlaceHolders(String placeHolders) {
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return setParam(Param_PlaceHolders, placeHolders);
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}
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public NamedSQL setFieldNamePlaceHolders(FieldsRuntime tableMeta) {
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ContentBuilder result = new ContentBuilder();
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for (Field field: tableMeta) {
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result.append(field.getName() + " = ? ", ", ");
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}
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return setParam(Param_FieldNamePlaceHolders, result.toString());
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}
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public NamedSQL setFilter(String filter) {
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if (Util.isEmpty(filter)) {
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return this;
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}
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return setParam(Param_Filter, filter);
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}
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public NamedSQL setFilter(Filter filter) {
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if (filter == null) {
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return this;
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}
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if (filter.isRaw()) {
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return setFilter(filter.getRawFilter());
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}
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String segment = filter.toString();
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return setFilter(segment);
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}
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public NamedSQL setOrderBy(String orderby) {
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if (Util.isEmpty(orderby)) {
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setParam(Param_OrderBy, orderby);
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return this;
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}
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String lower = orderby.toLowerCase();
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if (lower.indexOf("order by") < 0) {
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orderby = " order by " + orderby;
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}
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return setParam(Param_OrderBy, orderby);
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}
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public NamedSQL setOrderBy(OrderBy orderBy) {
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if (orderBy == null) {
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return this;
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}
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return setParam(Param_OrderBy, orderBy.getValue());
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}
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public NamedSQL setPage(Page page) {
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//1. 如果 page为空，清空分页
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if (page == null) {
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setParam(Param_Page_RowNo, "");
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setParam(Param_Page_limit, "");
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return this;
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}
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//2. 如果 page有值，设置分页
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if (dbaseType.isMySQL()) {
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setParam(Param_Page_RowNo, "");
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setParam(Param_Page_limit, page.toSQLString());
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}
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else if (dbaseType.isSQLServer()) {
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setParam(Param_Page_RowNo, "");
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setParam(Param_Page_limit, page.toSQLString());
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}
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else if (dbaseType.isOracle()) {
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setParam(Param_Page_RowNo, page.toSQLString());
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setParam(Param_Page_limit, "");
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}
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return this;
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}
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public void clearPage() {
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setParam(Param_Page_RowNo, "");
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setParam(Param_Page_limit, "");
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}
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public NamedSQL setFieldNameValues(Entity entity) throws Exception {
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ContentBuilder result = new ContentBuilder();
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FieldsRuntime tableMeta = entity.getFieldsMeta();
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int cnt = tableMeta.getFieldCount();
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for (int i = 0; i < cnt; i++) {
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if (entity.isAbsentValue(i)) {
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continue;
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}
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Field field = tableMeta.get(i);
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result.append(field.getName() + "=" + entity.getSQLString(dbaseType, i), ", ");
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}
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return setParam(Param_FieldNameValues, result.toString());
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}
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public NamedSQL setFieldNameValues(DataEvent event, FieldsRuntime tableMeta, Entity entity) throws Exception {
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ContentBuilder result = new ContentBuilder();
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String[] names = tableMeta.getFieldNames();
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int cnt = names.length;
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for (int i = 0; i < cnt; i++) {
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String name = names[i];
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if (!tableMeta.contains(name)) {
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continue;
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}
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if ((DataEvent.Update == event) && "id".equalsIgnoreCase(name)) {
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continue;
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}
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if (entity.isAbsentValue(name)) {
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continue;
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}
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result.append(name + "=" + entity.getSQLString(dbaseType, name), ", ");
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}
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return setParam(Param_FieldNameValues, result.toString());
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}
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public NamedSQL setFieldNameValuesIncludeId(DataEvent event, FieldsRuntime tableMeta, Entity entity) throws Exception {
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ContentBuilder result = new ContentBuilder();
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String[] names = tableMeta.getFieldNames();
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int cnt = names.length;
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for (int i = 0; i < cnt; i++) {
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String name = names[i];
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if (!tableMeta.contains(name)) {
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continue;
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}
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if (entity.isAbsentValue(name)) {
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continue;
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}
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result.append(name + "=" + entity.getSQLString(dbaseType, name), ", ");
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}
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return setParam(Param_FieldNameValues, result.toString());
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}
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public String getParam(String name) {
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VariantSegment variant = expression.getVariant(name);
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return variant.getValue();
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}
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public NamedSQL setParam(String name, String value) {
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VariantSegment variant = expression.getVariant(name);
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if (variant != null) {
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variant.setValue(value);
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}
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return this;
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}
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public NamedSQL setParam(String name, String value, String defaultValue) {
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if (value == null) {
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value = defaultValue;
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}
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VariantSegment sqllVariant = expression.getVariant(name);
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if (sqllVariant != null) {
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sqllVariant.setValue(value);
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}
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return this;
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}
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public NamedSQL setParam(String name, int value) {
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String StringValue = String.valueOf(value);
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return setParam(name, StringValue);
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}
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public NamedSQL setParam(String name, BigDecimal value) {
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String StringValue = value.toString();
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return setParam(name, StringValue);
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}
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public NamedSQL setParam(String name, Date date) throws Exception {
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DBDate dbDate = new DBDate(date);
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String value = dbDate.toSqlString(dbaseType);
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return setParam(name, value);
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}
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public NamedSQL setParam(String name, Date date, boolean includeTime) throws Exception {
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DBDate dbDate = new DBDate(date, includeTime);
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String value = dbDate.toSqlString(dbaseType);
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return setParam(name, value);
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}
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public NamedSQL setParam(String name, boolean value) {
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String StringValue = Util.booleanToStr(value);
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return setParam(name, StringValue);
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}
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public NamedSQL setJoins(DataJoins dataJoins) {
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//1. 替换逗号分隔符变量
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String commaSeparator = dataJoins.getCommaSeparator();
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setParam(Param_CommaSeparator, commaSeparator);
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//2. 替换 join select fields 变量
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String joinSelectFields = dataJoins.getJoinSelectFields();
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setParam(Param_JoinSelectFields, joinSelectFields);
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//3. 替换 join SQL 变量
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String joinSQL = dataJoins.getJoinSQL();
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setParam(Param_JoinSQL, joinSQL);
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//4. return
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return this;
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}
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public String getName() {
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return name;
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}
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@Override
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public Iterator<VariantSegment> iterator() {
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return expression.iterator();
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}
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public void clearVariantValues() {
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expression.clearVariantValues();
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}
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public VariantList getVariantList() {
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return expression.getVariantList();
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}
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public void setVariants(IVariantsProvider... providers) throws Exception {
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VariantLink.overWriteOnConsumer(null, this, providers);
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}
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@Override
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public void setVariants(DataEvent dataEvent, IVariantsProvider... providers) throws Exception {
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VariantLink.overWriteOnConsumer(dataEvent, this, providers);
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}
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public void fillVariants(IVariantsProvider... providers) throws Exception {
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VariantLink.fillOnConsumer(null, this, providers);
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}
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public void overWriteVariants(IVariantsProvider... providers) throws Exception {
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VariantLink.overWriteOnConsumer(null, this, providers);
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}
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private void setDefaultParams() {
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//1. 日期函数
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if (expression.containsVariant("dateAddFunction")) {
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String dateAddFunction = DBDate.getDayAddFunciton(dbaseType);
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setParam("dateAddFunction", dateAddFunction);
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}
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if (expression.containsVariant("currentTime")) {
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String dateAddFunction = DBDate.getCurrentTimeFunciton(dbaseType);
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setParam("currentTime", dateAddFunction);
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}
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if (expression.containsVariant("currentDate")) {
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String dateAddFunction = DBDate.getCurrentDateFunciton(dbaseType);
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setParam("currentDate", dateAddFunction);
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}
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}
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public void setSql(String sql) throws Exception {
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this.sql = sql;
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expression = new SQLCreator(sql);
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}
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@Override
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public Set<String> getVariantNames() {
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return expression.getVariantNames();
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}
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@Override
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public boolean containsVariant(String name) {
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return expression.containsVariant(name);
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}
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@Override
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public void setVariant(DataEvent dataEvent, String name, Object value) throws Exception {
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expression.setVariant(dataEvent, name, value);
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}
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@Override
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public boolean isVariantNull(String name) {
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return expression.isVariantNull(name);
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}
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public Entity getEntity() throws Exception {
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return SQLRunner.getEntity(this);
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}
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public EntitySet getEntitySet() throws Exception {
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return SQLRunner.getEntitySet(this);
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}
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public int execute() throws Exception {
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return SQLRunner.execSQL(this);
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}
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public static int execute(String name, ISQLContext sqlContext) throws Exception {
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NamedSQL namedSQL = NamedSQL.getInstance(name);
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sqlContext.setParametersTo(namedSQL);
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return SQLRunner.execSQL(namedSQL);
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}
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public String getOriginalSql(){
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return sql;
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}
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public String toString() {
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//1. 设置默认参数
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setDefaultParams();
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//2.
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return expression.toString();
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}
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}
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