io.ebeaninternal.server.deploy.id.IdBinderEmbedded Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of ebean Show documentation
composite of common runtime dependencies for all platforms
There is a newer version: 15.8.1
package io.ebeaninternal.server.deploy.id;

import io.ebean.bean.EntityBean;
import io.ebean.util.SplitName;
import io.ebeaninternal.api.SpiExpressionRequest;
import io.ebeaninternal.server.core.DefaultSqlUpdate;
import io.ebeaninternal.server.deploy.BeanDescriptor;
import io.ebeaninternal.server.deploy.BeanProperty;
import io.ebeaninternal.server.deploy.BeanPropertyAssocOne;
import io.ebeaninternal.server.deploy.DbReadContext;
import io.ebeaninternal.server.deploy.DbSqlContext;
import io.ebeaninternal.server.type.DataBind;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.sql.SQLException;
import java.util.Collection;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

/**
 * Bind an Id that is an Embedded bean.
 */
public final class IdBinderEmbedded implements IdBinder {

  private final BeanPropertyAssocOne embIdProperty;

  private final boolean idInExpandedForm;

  private BeanProperty[] props;

  private BeanDescriptor idDesc;

  private String idInValueSql;

  public IdBinderEmbedded(boolean idInExpandedForm, BeanPropertyAssocOne embIdProperty) {
    this.idInExpandedForm = idInExpandedForm;
    this.embIdProperty = embIdProperty;
  }

  @Override
  public void initialise() {
    this.idDesc = embIdProperty.getTargetDescriptor();
    this.props = embIdProperty.getProperties();
    this.idInValueSql = idInExpandedForm ? idInExpanded() : idInCompressed();
  }

  @Override
  public boolean isIdInExpandedForm() {
    return idInExpandedForm;
  }

  private String idInExpanded() {

    StringBuilder sb = new StringBuilder(30);
    sb.append("(");
    for (int i = 0; i < props.length; i++) {
      if (i > 0) {
        sb.append(" and ");
      }
      sb.append(idDesc.getBaseTableAlias());
      sb.append(".");
      sb.append(props[i].getDbColumn());
      sb.append("=?");
    }
    sb.append(")");

    return sb.toString();
  }

  private String idInCompressed() {
    StringBuilder sb = new StringBuilder();
    sb.append("(");
    for (int i = 0; i < props.length; i++) {
      if (i > 0) {
        sb.append(",");
      }
      sb.append("?");
    }
    sb.append(")");

    return sb.toString();
  }

  @Override
  public BeanProperty getBeanProperty() {
    return embIdProperty;
  }

  @Override
  public String getOrderBy(String pathPrefix, boolean ascending) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < props.length; i++) {
      if (i > 0) {
        sb.append(", ");
      }
      if (pathPrefix != null) {
        sb.append(pathPrefix).append(".");
      }

      sb.append(embIdProperty.getName()).append(".");
      sb.append(props[i].getName());
      if (!ascending) {
        sb.append(" desc");
      }
    }
    return sb.toString();
  }

  public BeanDescriptor getIdBeanDescriptor() {
    return idDesc;
  }

  @Override
  public String getIdProperty() {
    return embIdProperty.getName();
  }

  @Override
  public void buildRawSqlSelectChain(String prefix, List selectChain) {

    prefix = SplitName.add(prefix, embIdProperty.getName());

    for (BeanProperty prop : props) {
      prop.buildRawSqlSelectChain(prefix, selectChain);
    }
  }

  @Override
  public BeanProperty findBeanProperty(String dbColumnName) {
    for (BeanProperty prop : props) {
      if (dbColumnName.equalsIgnoreCase(prop.getDbColumn())) {
        return prop;
      }
    }
    return null;
  }

  @Override
  public boolean isComplexId() {
    return true;
  }

  @Override
  public String getDefaultOrderBy() {

    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < props.length; i++) {
      if (i > 0) {
        sb.append(",");
      }

      sb.append(embIdProperty.getName());
      sb.append(".");
      sb.append(props[i].getName());
    }

    return sb.toString();
  }

  public BeanProperty[] getProperties() {
    return props;
  }

  @Override
  public String getIdInValueExprDelete(int size) {
    if (size <= 0) {
      throw new IndexOutOfBoundsException("The size must be at least 1");
    }
    if (!idInExpandedForm) {
      return getIdInValueExpr(false, size);
    }

    StringBuilder sb = new StringBuilder();
    sb.append("(");

    for (int j = 0; j < size; j++) {
      if (j > 0) {
        sb.append(" or ");
      }
      sb.append("(");
      for (int i = 0; i < props.length; i++) {
        if (i > 0) {
          sb.append(" and ");
        }
        sb.append(props[i].getDbColumn());
        sb.append("=?");
      }
      sb.append(")");
    }
    sb.append(") ");
    return sb.toString();
  }

  @Override
  public String getIdInValueExpr(boolean not, int size) {
    if (size <= 0) {
      throw new IndexOutOfBoundsException("The size must be at least 1");
    }
    StringBuilder sb = new StringBuilder();
    if (not) {
      sb.append(" not");
    }
    if (!idInExpandedForm) {
      sb.append(" in");
    }
    sb.append(" (");
    for (int i = 0; i < size; i++) {
      if (i > 0) {
        if (idInExpandedForm) {
          sb.append(" or ");
        } else {
          sb.append(",");
        }
      }
      sb.append(idInValueSql);
    }
    sb.append(") ");
    return sb.toString();
  }

  @Override
  public Object[] getIdValues(EntityBean bean) {
    Object val = embIdProperty.getValue(bean);
    Object[] bindvalues = new Object[props.length];
    for (int i = 0; i < props.length; i++) {
      bindvalues[i] = props[i].getValue((EntityBean) val);
    }
    return bindvalues;
  }

  @Override
  public Object[] getBindValues(Object value) {

    Object[] bindvalues = new Object[props.length];
    for (int i = 0; i < props.length; i++) {
      bindvalues[i] = props[i].getValue((EntityBean) value);
    }
    return bindvalues;
  }

  /**
   * Convert from embedded bean to Map.
   */
  @Override
  public Object getIdForJson(EntityBean bean) {

    EntityBean ebValue = (EntityBean) embIdProperty.getValue(bean);
    Map map = new LinkedHashMap<>();
    for (BeanProperty prop : props) {
      map.put(prop.getName(), prop.getValue(ebValue));
    }
    return map;
  }

  /**
   * Convert back from a Map to embedded bean.
   */
  @Override
  @SuppressWarnings("unchecked")
  public Object convertIdFromJson(Object value) {

    Map map = (Map) value;

    EntityBean idValue = idDesc.createEntityBean();
    for (BeanProperty prop : props) {
      Object val = map.get(prop.getName());
      prop.setValue(idValue, val);
    }
    return idValue;
  }


  @Override
  public void bindId(DefaultSqlUpdate sqlUpdate, Object value) {
    for (BeanProperty prop : props) {
      Object embFieldValue = prop.getValue((EntityBean) value);
      sqlUpdate.setNextParameter(embFieldValue);
    }
  }

  @Override
  public void bindId(DataBind dataBind, Object value) throws SQLException {

    for (BeanProperty prop : props) {
      Object embFieldValue = prop.getValue((EntityBean) value);
      prop.bind(dataBind, embFieldValue);
    }
  }

  @Override
  public void addIdInBindValues(DefaultSqlUpdate sqlUpdate, Collection values) {
    for (Object value : values) {
      bindId(sqlUpdate, value);
    }
  }

  @Override
  public void addIdInBindValues(SpiExpressionRequest request, Collection values) {
    for (Object value : values) {
      for (BeanProperty prop : props) {
        request.addBindValue(prop.getValue((EntityBean) value));
      }
    }
  }

  @Override
  public Object readData(DataInput dataInput) throws IOException {

    EntityBean embId = idDesc.createEntityBean();
    boolean notNull = true;

    for (BeanProperty prop : props) {
      Object value = prop.readData(dataInput);
      prop.setValue(embId, value);
      if (value == null) {
        notNull = false;
      }
    }

    if (notNull) {
      return embId;
    } else {
      return null;
    }
  }

  @Override
  public void writeData(DataOutput dataOutput, Object idValue) throws IOException {
    for (BeanProperty prop : props) {
      Object embFieldValue = prop.getValue((EntityBean) idValue);
      prop.writeData(dataOutput, embFieldValue);
    }
  }

  @Override
  public void loadIgnore(DbReadContext ctx) {
    for (BeanProperty prop : props) {
      prop.loadIgnore(ctx);
    }
  }

  @Override
  public Object read(DbReadContext ctx) throws SQLException {

    EntityBean embId = idDesc.createEntityBean();
    boolean notNull = true;

    for (BeanProperty prop : props) {
      Object value = prop.readSet(ctx, embId);
      if (value == null) {
        notNull = false;
      }
    }

    if (notNull) {
      return embId;
    } else {
      return null;
    }
  }

  @Override
  public Object readSet(DbReadContext ctx, EntityBean bean) throws SQLException {

    Object embId = read(ctx);
    if (embId != null) {
      embIdProperty.setValue(bean, embId);
      return embId;
    } else {
      return null;
    }
  }

  @Override
  public void appendSelect(DbSqlContext ctx, boolean subQuery) {
    for (BeanProperty prop : props) {
      prop.appendSelect(ctx, subQuery);
    }
  }

  @Override
  public String getAssocIdInExpr(String prefix) {

    StringBuilder sb = new StringBuilder();
    sb.append("(");
    for (int i = 0; i < props.length; i++) {
      if (i > 0) {
        sb.append(",");
      }
      if (prefix != null) {
        sb.append(prefix);
        sb.append(".");
      }
      sb.append(props[i].getName());
    }
    sb.append(")");
    return sb.toString();
  }

  @Override
  public String getAssocOneIdExpr(String prefix, String operator) {

    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < props.length; i++) {
      if (i > 0) {
        sb.append(" and ");
      }
      if (prefix != null) {
        sb.append(prefix);
        sb.append(".");
      }

      sb.append(embIdProperty.getName());
      sb.append(".");
      sb.append(props[i].getName());
      sb.append(operator);
    }
    return sb.toString();
  }

  @Override
  public String getBindIdSql(String baseTableAlias) {

    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < props.length; i++) {
      if (i > 0) {
        sb.append(" and ");
      }
      if (baseTableAlias != null) {
        sb.append(baseTableAlias);
        sb.append(".");
      }
      sb.append(props[i].getDbColumn());
      sb.append(" = ? ");
    }
    return sb.toString();
  }

  @Override
  public String getBindIdInSql(String baseTableAlias) {

    if (idInExpandedForm) {
      return "";
    }

    StringBuilder sb = new StringBuilder();
    sb.append("(");
    for (int i = 0; i < props.length; i++) {
      if (i > 0) {
        sb.append(",");
      }
      if (baseTableAlias != null) {
        sb.append(baseTableAlias);
        sb.append(".");
      }
      sb.append(props[i].getDbColumn());
    }
    sb.append(")");
    return sb.toString();
  }

  @Override
  public Object convertId(Object idValue) {
    // can not cast/convert if it is embedded
    return idValue;
  }

  @Override
  public Object convertSetId(Object idValue, EntityBean bean) {

    // can not cast/convert if it is embedded
    if (bean != null) {
      // support PropertyChangeSupport
      embIdProperty.setValueIntercept(bean, idValue);
    }

    return idValue;
  }
}