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| 1 | +package org.nutz.dao.impl.jdbc.dm; |
| 2 | + |
| 3 | +import org.nutz.dao.DB; |
| 4 | +import org.nutz.dao.Dao; |
| 5 | +import org.nutz.dao.Sqls; |
| 6 | +import org.nutz.dao.entity.Entity; |
| 7 | +import org.nutz.dao.entity.LinkField; |
| 8 | +import org.nutz.dao.entity.MappingField; |
| 9 | +import org.nutz.dao.entity.PkType; |
| 10 | +import org.nutz.dao.entity.annotation.ColType; |
| 11 | +import org.nutz.dao.impl.jdbc.AbstractJdbcExpert; |
| 12 | +import org.nutz.dao.jdbc.JdbcExpertConfigFile; |
| 13 | +import org.nutz.dao.pager.Pager; |
| 14 | +import org.nutz.dao.sql.Pojo; |
| 15 | +import org.nutz.dao.sql.Sql; |
| 16 | +import org.nutz.dao.util.Pojos; |
| 17 | +import org.nutz.log.Log; |
| 18 | +import org.nutz.log.Logs; |
| 19 | + |
| 20 | +import java.util.List; |
| 21 | + |
| 22 | +/** |
| 23 | + * @author wizzer.cn |
| 24 | + */ |
| 25 | +public class DmMysqlJdbcExpert extends AbstractJdbcExpert { |
| 26 | + |
| 27 | + private static final Log log = Logs.get(); |
| 28 | + |
| 29 | + public DmMysqlJdbcExpert(JdbcExpertConfigFile conf) { |
| 30 | + super(conf); |
| 31 | + } |
| 32 | + |
| 33 | + public String getDatabaseType() { |
| 34 | + return DB.DM_MYSQL.name(); |
| 35 | + } |
| 36 | + |
| 37 | + public void formatQuery(Pojo pojo) { |
| 38 | + Pager pager = pojo.getContext().getPager(); |
| 39 | + // 需要进行分页 |
| 40 | + if (null != pager && pager.getPageNumber() > 0) |
| 41 | + pojo.append(Pojos.Items.wrapf(" LIMIT %d, %d", pager.getOffset(), pager.getPageSize())); |
| 42 | + } |
| 43 | + |
| 44 | + public void formatQuery(Sql sql) { |
| 45 | + Pager pager = sql.getContext().getPager(); |
| 46 | + // 需要进行分页 |
| 47 | + if (null != pager && pager.getPageNumber() > 0) |
| 48 | + sql.setSourceSql(sql.getSourceSql() |
| 49 | + + String.format(" LIMIT %d, %d", |
| 50 | + pager.getOffset(), |
| 51 | + pager.getPageSize())); |
| 52 | + } |
| 53 | + |
| 54 | + public String evalFieldType(MappingField mf) { |
| 55 | + if (mf.getCustomDbType() != null) |
| 56 | + return mf.getCustomDbType(); |
| 57 | + if (mf.getColumnType() == ColType.INT) { |
| 58 | + int width = mf.getWidth(); |
| 59 | + if (width <= 0) { |
| 60 | + return "INT"; |
| 61 | + } else if (width <= 4) { |
| 62 | + return "TINYINT"; |
| 63 | + } else if (width <= 6) { |
| 64 | + return "SMALLINT"; |
| 65 | + } else if (width <= 10) { |
| 66 | + return "INT"; |
| 67 | + } |
| 68 | + return "BIGINT"; |
| 69 | + } |
| 70 | + if (mf.getColumnType() == ColType.BOOLEAN) { |
| 71 | + return "TINYINT"; |
| 72 | + } |
| 73 | + // 其它的参照默认字段规则 ... |
| 74 | + return super.evalFieldType(mf); |
| 75 | + } |
| 76 | + |
| 77 | + public boolean createEntity(Dao dao, Entity<?> en) { |
| 78 | + StringBuilder sb = new StringBuilder("CREATE TABLE " + en.getTableName() + "("); |
| 79 | + // 创建字段 |
| 80 | + for (MappingField mf : en.getMappingFields()) { |
| 81 | + if (mf.isReadonly()) |
| 82 | + continue; |
| 83 | + sb.append('\n').append(mf.getColumnNameInSql()); |
| 84 | + sb.append(' ').append(evalFieldType(mf)); |
| 85 | + // 非主键的 @Name，应该加入唯一性约束 |
| 86 | + if (mf.isName() && en.getPkType() != PkType.NAME) { |
| 87 | + sb.append(" UNIQUE NOT NULL"); |
| 88 | + } |
| 89 | + // 普通字段 |
| 90 | + else { |
| 91 | + |
| 92 | + if (mf.isNotNull()) { |
| 93 | + sb.append(" NOT NULL"); |
| 94 | + } else if (mf.getColumnType() == ColType.TIMESTAMP) { |
| 95 | + sb.append(" NULL"); |
| 96 | + } |
| 97 | + |
| 98 | + if (mf.isAutoIncreasement()) |
| 99 | + sb.append(" IDENTITY(1,1)"); |
| 100 | + |
| 101 | + if (mf.getColumnType() == ColType.TIMESTAMP) { |
| 102 | + if (mf.hasDefaultValue()) { |
| 103 | + sb.append(" ").append(getDefaultValue(mf)); |
| 104 | + } else { |
| 105 | + if (mf.isNotNull()) { |
| 106 | + sb.append(" DEFAULT 0"); |
| 107 | + } else { |
| 108 | + sb.append(" DEFAULT NULL"); |
| 109 | + } |
| 110 | + } |
| 111 | + } else { |
| 112 | + if (mf.hasDefaultValue()) |
| 113 | + addDefaultValue(sb, mf); |
| 114 | + } |
| 115 | + } |
| 116 | + |
| 117 | + if (mf.hasColumnComment()) { |
| 118 | + sb.append(" COMMENT '").append(mf.getColumnComment()).append("'"); |
| 119 | + } |
| 120 | + |
| 121 | + sb.append(','); |
| 122 | + } |
| 123 | + // 创建主键 |
| 124 | + List<MappingField> pks = en.getPks(); |
| 125 | + if (!pks.isEmpty()) { |
| 126 | + sb.append('\n'); |
| 127 | + sb.append("PRIMARY KEY ("); |
| 128 | + for (MappingField pk : pks) { |
| 129 | + sb.append(pk.getColumnNameInSql()).append(','); |
| 130 | + } |
| 131 | + sb.setCharAt(sb.length() - 1, ')'); |
| 132 | + sb.append("\n "); |
| 133 | + } |
| 134 | + |
| 135 | + // 结束表字段设置 |
| 136 | + sb.setCharAt(sb.length() - 1, ')'); |
| 137 | + // 执行创建语句 |
| 138 | + dao.execute(Sqls.create(sb.toString())); |
| 139 | + |
| 140 | + // 创建索引 |
| 141 | + dao.execute(createIndexs(en).toArray(new Sql[0])); |
| 142 | + |
| 143 | + // 创建关联表 |
| 144 | + createRelation(dao, en); |
| 145 | + |
| 146 | + return true; |
| 147 | + } |
| 148 | + |
| 149 | + protected String createResultSetMetaSql(Entity<?> en) { |
| 150 | + return "SELECT * FROM " + en.getViewName() + " LIMIT 1"; |
| 151 | + } |
| 152 | + |
| 153 | + public boolean canCommentWhenAddIndex() { |
| 154 | + return true; |
| 155 | + } |
| 156 | + |
| 157 | + protected Sql createRelation(Dao dao, LinkField lf) { |
| 158 | + Sql sql = super.createRelation(dao, lf); |
| 159 | + if (sql == null) |
| 160 | + return null; |
| 161 | + StringBuilder sb = new StringBuilder(sql.getSourceSql()); |
| 162 | + return Sqls.create(sb.toString()); |
| 163 | + } |
| 164 | +} |
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